When both the TV anime and the manga were running at the same time, I definitely saw the manga as the stronger and more interesting work and was what I preferred. It was in the same medium as the original work, Toriyama seemed to have more of a hand in overseeing it, there was less fluff, it was being filtered ultimately through one person's mind and hand (Toyotaro's), it wasn't blighted by the anime's then-current house style art direction emblemized by Yamamuro's greasy and bloated character designs, it wasn't punctuated by Sumitomo's bland musical score, etc.
These days my preference has switched. Since 2018 I've soured pretty significantly on Toyotaro as a creator; his choreography and plotting is for the most part extremely derivative, and while Dragon Ball has always been derivative of other things as well as itself, the way he goes about it never feels terribly interesting to me. Having re-read the Moro arc last month really solidified that for me. Besides that, the anime is the source material here, with Toyotaro's manga being an adaptation. Not to mention that Toriyama had his share of oversight with the anime, as well (we all remember how his corrections about Geran's personality resulted in a last minute swap with Toppo during the Zen Exhibition Match

). While the art style of the TV anime on the whole never changed, we did start to see more episodes with a less ugly art direction. In the Goku Black arc, Sumitomo stepped up his game. Not to mention the voice talent; Nozawa's Goku Black was killer, and hearing more of Nakao as Freeza was splendid. So, on the whole, I now instead find the anime to be more interesting as a piece of art/media.
Though I should emphasize that, just like back in 2018, I don't find either to be terribly great on the whole, and find both to be ultimately superfluous additions to Dragon Ball's story, which ended in 1995.
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In terms of storytelling, Toyotaro seems to not be as interested in telling a story about Goku's growth as a martial artist as the anime did, and that's ultimately what I'm here for. To quote myself from a few days ago:
You can bang on in every single post you make about how the TV anime made Goku too much of a clown, but I don't think you can blame it for presenting a Goku who isn't at the forefront of martial prowess. That's more the realm of the manga and Super Hero: Goku saying he's always been a "bad student" during the Tournament of Power, Vegeta somehow being way better at ki control than him on Yardrat during the Moro arc, Goku insisting that meditation isn't real training in Super Hero, etc. I'd say that's a much more important part of Goku's character to not fuck up than what the TV anime did.
In the Champa and Goku Black arcs, Toyotaro "got" this well enough, with Goku being more savvy about Blue's drawbacks and working around it, as well as whipping out Destruction on the fly against Zamasu. But from the Tournament of Power onward, he seems to really love making Goku seem more like a novice than Vegeta, and I just don't think that's in-line with the natural progression of either character's arcs. Goku is a guy who is so good at this shit that he gradually leaves everyone in the dust, such that he makes reckless decisions to get a good fight, before ultimately finding a healthy outlet in Oob as the story's ending. Leaving everyone in the dust necessarily includes Vegeta.
Vegeta sought to skip the Tournament of Power to witness the birth of his second child, and to whatever extent we can read into things like Neko Majin Z and Toriyama's GT concept art, he's destined for babysitting, growing a mustache, and cropping his hair. Vegeta giving up on trying to attain Ultra Instinct and going down a different (and ultimately not as good) path is in line with this, but then Ultra Ego gets introduced and presented as a different (and ultimately just as good) path, fumbling the character arc.
There are also just so many beats that the manga doesn't hit, or hit as well, with regards to Freeza's characterization, his growth as a martial artist, and his relationship with Goku. The lack of Nakao and Nozawa bouncing off of each other definitely plays some part in that, but the manga just really abridges this stuff to its absolute practical minimum, I feel to its detriment. This applies to the Tournament of Power, though; Black Freeza showing up at the end of the Granola arc, punking Goku and bouncing, is very in-line with where he's at, and I loved it.
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I agree with people saying that the manga doesn't hit the "highs" that the anime does. Zamasu merging with the universe, every instance of Ultra Instinct during the Tournament of Power, Kafla's entire existence, and the Tournament of Power's finale are entirely unrivaled by the manga's adaptation of those events. But the manga isn't without its highs either, ones which outshine the anime's versions: the flashback to the fight between Champa and Beerus was a nice spectacle with a great sense of scale to it rarely seen in Dragon Ball fights, Goku using Destruction was the kind of hype "asspull" I'm here for, I loved seeing all of the Gods of Destruction fight in a battle royale, and Kale absolutely demolishing a chunk of the Tournament of Power roster was a great way to trim the fodder and speed things up.
There are also small things the manga does that I really liked, such as Champa's search for the Super Dragon Balls occurring alongside Goku's fight with Beerus and effectively setting Resurrection F into motion. As well as Trunks becoming a Kaioshin apprentice and learning how to heal; just a shame it had to turn into a video game, and Trunks lost the ability when he changed class, because it seemed like the kind of thing that would nicely setup Gohan having a distinct role to play in combat (as he, also, had a Kaioshin dance around him, once upon a time).
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Last point of comparison is their respective endings. Which is to say, the anime at least
has one. Clearly, we can't begrudge an ongoing work simply for
being ongoing, and certainly the Super manga will eventually inevitably have its final chapter, after which a better comparison can be made. But this thread was opened in 2023, not in 20XX, so compare I will.
In many respects, the Tournament of Power acted as a sufficient culmination to the plot threads introduced in Battle of Gods and Resurrection F. To once again quote myself from a few days ago:
"Super" opens with the introduction of the God of Destruction, and the revelation that there are multiple universes. The Super TV anime, at least, ended with Goku having achieved the greatest technique of the gods which got him a standing ovation from all of the Gods of Destruction; he fought the mortal who was stronger than a God of Destruction, and decisively bested him using the technique. In this way, he fought the strong guys the "multiple universes" thread opened, and vicariously through them passed the God of Destruction who bested him at the beginning. I think that's a "proper ending", though there's definitely room to keep going with it if you wanted to (ie: Goku getting better at Ultra Instinct, rematches against Beerus, Geran, etc.).
In other words, this was a good place to stop. Whether it was at the behest of corporate editorial mandate, or due to some continued artistic vision, the manga kept going. Now while I just said that we can't begrudge an ongoing work for being ongoing, one could argue that we can if it's still ongoing
after its natural conclusion. Especially if it's not really doing much more by continuing, and is thus doing so for little good reason.
I don't much care for the way that Ultra Instinct has been handled. Goku learning to activate it at will is the obvious place to go, but now the story has flipped back around to black haired Ultra Instinct being the better version, and the adjective in front of it has changed I don't know how many times by this point. It feels to me like it's spinning its wheels in this regard, and could stop at whatever point it wants.
As said before, I don't like the implications that Ultra Ego has for Goku's and Vegeta's character arcs (even if I do like everything else about the form). The manga is now also adapting the Super Hero film, and while I don't have any problem with that, it has certain implications on the plot and characters. Goku's little meditation goof would have been a film-exclusive problem, but it's now a part of the manga, adding to the "Goku is a novice, Vegeta is a master" problem that both of their character arcs now have in this medium.
That said, now that the story has been re-opened after the Tournament of Power, there's still some stuff that the manga would ideally touch on before reaching its next natural conclusion point: Broli learning to control his power, Goku and Freeza having another rematch. With Vegeta, Freeza, Piccolo, and Gohan having new forms, a second Tournament of Power could someday be on the horizon as well.
But to finish this section: the anime and manga reached the point of natural conclusion; the anime ended there, the manga didn't; the places the manga has gone are in some ways superfluous (such as True? Ultra Instinct) and narratively problematic (such as Ultra Ego), so it having not ended further sours it in my eyes. There are places it has gone in other ways that are natural and organic (such as Black Freeza), but so far these are outweighed.
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"Combine both versions of Super and you'd get something pretty good" is today's "GT had good ideas, but bad execution", and I agree with it. Back in 2017, I'd have liked to see the manga be the "base" of such a fusion, with choice elements and moments from the anime added as a supplement. These days, I feel the opposite, and would instead prefer the anime as the "base", with choice elements and moments from the manga added as a supplement.