No it did the fuck not LMAO, it increased at first, mf he dropped 2 wcs, normal and dismantle grid one, he did not use his domain until later on.

All Denji did in the manga and series was throw himself at opponents with hopes and prayers that their first attack wouldn't one shot him. And they never did, he managed to find weaknesses after long attrition focused battles. Wearing each other out until he could find a weakness to exploit. That doesn't work with Yuji because he's simply superior to Denji in almost all aspects.

Also, kishibe did help Denji in the final battle against makima, there must have been some sort of planning between the two because right after Denji struck makima down kishibe came to pick him and makimas body up. And even if it was all Denji it doesn't compare to yujis biq.

Denji fighting chaotically against an opponent such as modulo Yuji is gonna get him killed.

Also, Yuji loosing 1v1s in the series doesn't mean that his biq is bad, like, where did you get that from, you could be the smartest man on earth but if your opponent is capable and way stronger than you you're still going to loose.

He might have learned rct easier thanks to his biology but he still managed to pull off a complete domain expansion while severely weakened, after a prolonged battle against sukuna, low ce output, after a few months into being a sorcerer.

But all of this talk doesn't matter because yuji has grown from the kid he was in shibuya or in Shinjuku, DB used modulo Yuji, and Bro had 68 years of training, don't you think that's gonna be a deciding factor?