The problem is the writers themselves aren't very consistent, and I don't really think trying to linearly power scale off the anime works at all. I look at both the anime and manga, look at major story elements, and try to see what the writers are trying to imply. Also I try to scale off of Goku and Vegeta last as their powers are unkown, plus we don't know when they are holding back or by how much.PFM18 wrote: I didn't mean serious from a non-universe perspective. I mean as in the fact that Future Trunks was not serious during this altercation I believe it is fair to say he wasn't using much power and it really would be a shitty scene if Kid trunks punched him and it did absolutely nothing. Dabura could have been any time within the 13 years since we have seen Future Trunks in the story so I don't think much can be drawn from that. "God tier" as far as DBS goes doesn't necessarily mean "Super Saiyan God tier" because SSG really isnt very strong in the scope of things. I think he was stronger than SSG but not God tier within the series until he reaches Super Saiyan Rage, prior to that he couldn't touch SSB or even SSJ3 for that matter. It is pretty clear that if he can compete with Goku's SSJ2 at all then he definitely is beyond Vegetto from the Buu saga, it is more of a question of whether you think it is stupid that that is the case or not.
For the universe 6 arc 2 characters we have an idea for how strong they are, would be Piccolo and Buu. Buu didn't participate, but he was implied to be stronger than Piccolo by Goku, by multiple people in the RoF arc, and he did the best against Beerus besides rage Vegeta in the BoG arc. Plus Piccolo was still weaker than Cell/Dabura in the Buu saga and he hasn't really shown much signs of growth up to the U6 arc.
So from this we know Piccolo<Buu. Piccolo's only fight was against final form Frost, who wasn't at peak condition. However Frost shouldn't be far off from his full power considering he didn't fight that long, and I don't even think him being weaker was mentioned in the manga. Piccolo was able to fight pretty evenly against Frost in the manga, though it was confirmed he was using up more power than Frost, and in the anime he was shown to be weaker as well, but could still react to Frost's attacks and block them. So Piccolo<Frost, but not by a crazy amount.
Now how strong is frost compared to the other U6 fighters? Well in the manga Vados calls him U6's strongest warrior, so at the very least I would say he is stronger than base Cabba (really the only other "warrior" U6 had since Hit was an assassin and I don't know what to call Botamo, who is the weakest out of them anyways, and Magetta).
I can't say by how much weaker base Cabba is compared to Frost, but considering he should definitely be weaker, I would say at max he is around Piccolo level.
So we have base Cabba<=>Piccolo<Frost<=>Buu
For Trunks, in the flash back he was weaker than Dabura with ssj, but stronger with ssj2. So at that time his ssj was around Piccolo level and his ssj2 around maybe Frost level. But he clearly got a lot stronger since then. His ssj2 got so strong he was as strong as ssj3 Goku who has gotten stronger since the Buu arc. There is not much to scale off of Trunks so I'll use Goku for a bit. Goku's base is at the very least around Piccolo level in the manga, and in the anime he is shown to be stronger but Piccolo charging up was enough to push him back. Goku also lost a sparing match to Buu who trained for a few hours and had to go ssj2 to fight mystic Gohan who was buu saga mystic Gohan level the day before, implied by Piccolo. Based off of that I'll say base Goku is at least around Cell to Buu level, with Trunks being around the same. Trunks in the manga was shown to be one shot by SSG in the manga, and one shot by ssj3 Goku who absorbed god power in the anime. So I think it is reasonable to say even at full power Trunks is weaker than any version of SSG, and if he was really supposed to be stronger than BoG SSG something like that would of been shown, not getting one shot by SSG. Clearly the implication was SSG>Trunks.
So at least for the manga it probably goes like this
base Cabba<=>Piccolo<base Goku<=>Frost<=>Buu<Zamasu<ssj2 Trunks<SSG