Well, the kid gloves won't really come off, so it is more even than one would think. He's not gonna kill the guy, probably, even though he logically could very easily.
He could also beat his face into hamburger pretty easily if he got a hold of him or at least break his jaw or nose like kindling because he has zero facial protection but that's not happening either.
Or his arms, etc.
Seriously, if you wanted to end a fight like this you could pretty much fuck the guy in the flying suit up enough he just couldn't go on and blacked out like that without actually killing him, although breaking the wings would be better.
You could also pull your punches even more and at the most, break his nose and somehow magically not do serious damage from hitting him hard enough to knock him out for a while with a super alloy clad fist to the skull. (That's serious stuff. hitting someone hard enough to knock them out.)
But seriously, the fact that the rating and feel of the movies dictate he's only going to get some nasty bruises and probably a broken nose at the most limit the potential violence.
Or maybe he'll accidently get shot, but it'll be clean and no complications and not seriously threaten him even though getting shot is really bad no matter where it is.