JakeTheBank
Return of the King
Different writers have penned different descriptions of Warrior's Madness and what it entails. In some cases, it's a state of mind that Thor can willingly go to (or be pushed in). In another, it was treated like a mental disease of sorts that, iirc, could spread to other Asgardians (which was why it was a big deal). In most of those, however, Thor doesn't really exhibit anything close to a amp and he pretty much sticks to melee attacks and hammer tosses with an occasional lightning bolt. Not that any of those things suck considering what he's done with those attacks, but no, he's not going to be a very intelligent fighter.
Superman would probably win, but Thor's ferocity would likely send him for a loop.