The Sea God "arc" is part of Fantasia. And since all of Studio Gaga works on Berserk now rather than Miura doing most of the art like in the pre-Druanki days, we might get more pages per chapter.
Given that he is a fighter-type Namekian like Piccolo but did not gain a golden skinned appearance and looked regular, could it be that he refused such a cheap power up out of pride? I think Piccolo would note if the Nail part of him already received the potential unlock as well
Wonder why Gohan's Great Saiyaboy outfit and #17 didn't make an appearance in this movie. Kind of a missed opportunity since Gohan's superhero antics making a cameo would have been cool even if he didn't fight in that costume, and Cell (Max) showing up in his 2nd form-inspired form but not...
Or more likely they're just talking out of their asses since it's clear that a serious Beerus dwarfs this Zamasu as does any other Hakaishin (except maybe Sidra) and Angel. Probably just the anime writers introducing concepts they never explored similar to how Jiren said "This heat... is the...
1st RoSaT: Stronger than 50% Freeza for Vegeta/Trunks
2nd RoSaT: Stronger than Yadrat Goku but below their pre-Rosat SSJ
Galu: #17 tier
Gohan: Between #17 and #16
Rough estimate. I haven't done a PL lst in a decade