Vegeta was considered inferior to, but at least worth comparing to UI Omen Galu. Said transformation is leagues above regular CSSJB who Gohan isn't that far above imo.
oh ye. i completely forgot about that. that was the reason why i considered vegeta to be so far above gohan in the first place. bad match-up i guess but i disagree on Gohan only being slightly above cssjbs. gohan blows them out of the water. Kefla >> peak Kale at-least in my opinion.
Vegeta was considered a clear superior to all that had come before him, apart from UI Omen Goku, according to Jiren. He wins, although I don't know if it's a stomp. There's no telling.
I don't think it's such a bad match-up. Even if Vegeta was said to be superior to everyone that came before him aside from Omen Goku, we don't know just how much stronger he was compared to Gohan. I mean, the latter did hold his own against Kefla, whose fusion include a SSJB-tier. That's nothing to sneeze at.
Vegeta definitely wins. I'd personally say it'd be a stomp, seeing as how Vegeta ought to be significantly above Pseudo Kaioken SSB Goku for Jiren to praise him as he did, with that Goku in turn likely being above Gohan due to status-quo.