I just joined and skipped past the middle thousand posts on this topic so I don't know if anyone's already said this... it seemed to me that hulk knew about his vulnerability to radiation because glad was hurt by his own optic blast. Wasn't that some kind of radiation?
Also, that marvel/dc crossover with hulk and super man (one of only about 20 or so comics I've actually read) just doesn't make sense to me. As I recall, hulk first punches superman and superman gets knocked like a mile in the air. Then supe comes back and says he "wasn't ready" Then when hulk punches him again, he can't budge him. If supe has such extraordinary speed, how can he "not be ready" for a punch from hulk, who doesn't have super speed? With super speed, shouldn't he have super reflexes as well? Anyway, I saw you guys had cited tons of other examples where battles, or at least aspects of them, didn't turn out as they seemingly should have. With all that, doesn't it make sense to put just a little less emphasis on how biased and sometimes illogical battles turn out and more on what the actual stated and "proven" powers of the characters are?
I also have an example with gladiator of how biased these battles can be. It's from the (don't laugh) 90's x-men cartoon and it's when juggernaut punches gladiator but doesn't budge him, and then glad turns around and chucks juggernaut about a mile away. That's fine, but at least twice in the same episode and in other episodes as well, rogue is shone knocking gladiator around, and rogue is clearly not a match for either of them in terms of sheer strength. I guess this is another example of "not being ready," but it shouldn't happen, in my opinion. I think it's obvious that they let rogue get in a few good hits against gladiator purely because she's one of the main characters in the show. This has got to be true in a bunch of comics. The character who has his name in the comic series will probably win more often than not. (I'm sure you guys can give tons of examples of when I'm wrong...)
Finally, I guess I'll weigh in on the topic: I think gladiator would probably win the fight, just considering what I know about their powers.