You and I have diametrically differing ideas of what the term "weakling" means. I think the word you're looking for is "underwhelming". Hit being around the same level as the strongest protagonist is not what anyone can accurately describe as weak. You just personally find this level of power for an antagonist unsatisfying. That's not something I was arguing against since that's up to the individual to decide.
Whatever wrote:First lets make it clear that Hit was a 'weakling' in the sense that he was too underwhelming for someone being the strongest and final opponent of this arc.
In the end of this arc we have Goku tellling Vegeta(the 2nd strongest of the team)that he could have beaten him if he was at full power.
Hit went full power against SSJG Goku,defeated the 2nd strongest of Goku's team but not really since we learn later that Vegeta could have defeated him anyways,meaning that Goku who is stronger than Vegeta could do it easier.
As I mentioned, Hit is not weak. You felt he was underwhelming as an antagonist. A character being factually weak and feeling underwhelming are two completely different things. Also, there is nothing suggesting that Vegeta was weaker than Goku in any way. From all observable and stated information, the two were equals in power. Suggesting that Hit was only as strong as the 2nd strongest character on the Universe 7 team is not accurate. The top spot on the team was shared by two people equally and Hit was nearly as strong as either of them while handicapped.
Examples you mentioned like Gohan vs Cell,Goku vs Fat Buu,worked because the villain pushed the 'hero' to go full power without going full power themselves,not to mention in both cases at those specific points in time,the villain was still the 2nd strongest and easily defeated the 2nd strongest of the Z fighters,meanwhile lets see with Hit how it went.
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At the Champa arc,team U7 had only 2 fighters that were worthwhile,Goku and Vegeta and yet the strongest of U6 could be defeated by both of them.
Pushing the heroes to go full power before going full power themselves is an incredibly specific criteria for judging the merit of an antagonist. It doesn't matter who goes full power first, what matters is how the two opponents stack up afterwards and who would've beaten who in the end. By Goku's estimate at the end of the fight, he and Vegeta might've been able to defeat Hit in a one on fight, but only with the handicap of Hit not being able to use all of his techniques. Unrestricted by the tournament's rules, Goku gauged that Hit was actually much stronger than he appeared to be. With Goku/Vegeta only being slightly stronger than a handicapped Hit, it means that Hit would be a much more dangerous opponent if he was allowed to go all out.
Golden Freeza is a different case altogether,Freeza was stronger than both Goku and Vegeta but only lost because of his own shorcomings,Hit never stood a chance at winning from the beggining against both Goku and Vegeta,in fact the only reason he even won against Vegeta was of Vegeta's own shortcoming instead of his own skill or power.
With the short-lived nature of Super Saiyan Blue's power, Hit stood a very real chance of winning against either Goku or Vegeta. Goku (Vegeta's equal) in his strongest form wasn't able to finish off Hit. The most he was able to accomplish was overcoming Hit's timeskip and
almost landing a Kamehameha. Hit was fine and still ready to keep fighting afterwards. With the limited use of Super Saiyan Blue at the time and the large amount of energy Goku had just expended, there's no way of knowing whose power would have given out first. It was a close match. Without the rules of the tournament holding him back, there's no telling how the fight would go.
Vegeta and Toppo worked as well because it was second fiddle vs second fiddle,Toppo worked because he was the secondary boss battle,if Toppo was the main opponent instead of Jirren then yeah he would underwhelming and a weakling of a final boss.
The opposite holds true for Hit,his standing and achievement would be fine if he was the second fiddle as well.
The example of Vegeta beating Toppo (and Goku vs. Golden Frieza for that matter) was specifically in regards to the idea of being able to defeat an opponent making that opponent a "weakling". The framing of the fight was irrelevant to the point. I could've used Goku beating Jiren as an example and the point would remain the same: being capable of beating an opponent doesn't make said opponent weak. Your original argument was that Goku saying that Vegeta could've beaten Hit meant Hit was a weakling. My point was that that is not an accurate statement and that an opponent can still be very strong regardless of whether or not someone can beat them.
Hit was a weakling for someone who is the final opponent of the arc he appeared in,to use your examples imagine how underwhelming Fat Buu would be if ssj2 majin Vegeta was stronger than him or both Goku and Gohan being stronger than Cell.
Super Saiyan 2 Vegeta was not equal to Super Saiyan 3 Goku, so that comparison doesn't work. Vegeta and Goku were equals at the time of the tournament. That aside, the idea of an antagonist being a weakling if more than one hero is capable of beating them doesn't hold much weight. Kid Buu, for example, could have been beaten by Gotenks, Gohan and Goku. This didn't undermine the final battle with Buu since only Goku was left to fight him. If they weren't written out of the plot first or if Goku and Vegeta had used the Potara, Kid Buu would've been defeated with minimal effort. In a similar vein, Vegeta was written out of the running for defeating Hit and Goku was the only one left to challenge him. To me, this doesn't lessen the merit of Hit's showing against Goku. Really, that's the crux of the argument of whether or not Hit was underwhelming - having more than one character that is technically capable of defeating the antagonist doesn't undermine the fight for me. What matters to me is whether or not the antagonist puts up a good fight against the hero that
does get to fight them. Hit put up a good fight against the strongest protagonist at the time, so I don't have a problem with it.
To reiterate, Hit is not weak. Hit is Super Saiyan Blue-tier strong. He was nearly equal to the two equally strongest heroes at the time. The fact that there were two heroes who shared the top spot and were capable of defeating him made Hit seem underwhelming to you. This does not make Hit weak, it means that he isn't as strong as you'd prefer him to be. I don't intend to argue against that interpretation because it is a personal feeling and not a fact that is right or wrong. I won't argue feelings, since that leads nowhere.
The post-Super fandom has ruined my love for Dragon Ball.