SpacelySprockets
Veteran
The manga clearly states when Goku and Trunks was fighting that Trunks is stronger than "Gohan was back then", and when Goku is at SSJ3 Trunks is still able to keep up with him until Goku cheats by one-shotting him in his blue form.Where are the receipts for this because I've seen no evidence for this. The best thing Trunks did was beat Dabura which isn't even that spectacular of an accomplishment. Zenkai's stopped mattering after Namek. They haven't provided a significant power boost since SSJ was introduced. There is no logical explanation for Trunks fairing well against Zamasu while SSB Vegeta got bodied rather easily. And as far as power scaling goes I'm talking about the series as a whole. Actually, this Zamasu never fought Goku since this is an alternative timeline. We also have no clue how strong he actually is either.
Vegeta got bodied by an off guard attack from Black, not Zamasu. He wouldve been able to beat Zamasu up just like Trunks did. And even if it is an alternate timeline, Zamasu clearly isn't eons stronger than his present self as indicated by the fight, he is just immortal.