He was, but Kenshi had a good explanation that Vegeta most likely just wasn't going all-out yet. The boost for Super-Saiyan Rose weirdly enough doesn't seem to be that high.SSJ2 said:Even SSJR? Wasn't Base Black on par with SSJB Vegeta a couple of episodes ago?
Goku said that he was probably going to run-out of power sooner.Saiyan Paladin said:Base Black seemed superior to SSj Blue Vegeta until Vegeta catches SSj Rose Black's punch and Black visibly struggles with it. I'm still confused by the power scaling.
As for Hit's full potential I'm guessing it's at least superior to KK x10 SSj Blue Goku, based off what Goku says when he quits.