u/Complex-Plankton-660

Steve has Full Protection 4 and unbreaking netherite armor with mending (things he kills equal experience) he also has a sharp five netherite sword

And aside from they regens from this. Quite easily

Sukuna genuinely should have and could have, dog walked every single person, it was only untill Yuji's soul punches we're weakening him, that was when he started to take the fight seriously, but at that point Megumi's soul was fighting against him

If Sukuna's main goal was winning, he would have just impaled everybody like he did Choso and there's nothing they could do about it.