I'm gonna say Luke, Wolverine gets KOed a lot it seems.
Yeah, I'm going to have to bet that the instances Wolverine tanks ridiculous amounts of blunt force trauma are far more numerous and consistent than the ones you re referring to when he gets knocked out.
I'm just saying that it seems Logan gets KOed a lot more than Cage - hence my answer. I don't think I've ever seen Cage get KOed, but then again he's featured a lot less. Nothing against Logan.