actually, i think 8888 is a little bit right and wrong. the original post that raised the issue was this:
<<I sincerely doubt it. Why would they? If this were Hulk with Wolverine's Claws vs. Colossus' organic steel armor, i'd say Colossus goes down in a heartbeat. >>
and assessment i completely agree with. the claws ARE capable of cutting through him, just that wolvie can't apply enough force to do more than scratch him. to say if he stabbed he could penetrate him is speculation. i'd say he could penetrate perhaps, but only superficially and again not enough to do real damage.
i also agree with urizen about the other part of his post -- namely that hulk likely STILL couldn't penetrate the shield. someone else raised an interesting question of whether hulk is capable of breaking or denting it if angry enough. guess i'd have to say yes, but he'd have to be stronger perhaps than he's ever been to do so.