lulz.
no proof = "talkin' outta mah ass". Eh, it probably has happened due to PIS or some other random inconsistency, but it's not happening in this fight. Logan has tanked Iron Fist's blows and Cage ain't hitting any harder than that.
If i may be so bold, I'm gonna say that if it weren't for the limited space the ring provides, Cage couldn't even touch Logan, not realistically.
How is Wolverine going to hurt him in a bare-knuckle match to the death? Cage can hurt Wolverine bare-ass naked. I've yet to see evidence or hear logic as to how an Adamantium claw-less Logan severely(if at all) hurts Cage. Yes, Logan dwarfs Cage in combat knowledge, skill, tactics, resourcefulness, etc. But still? Be logical.
Wolverine's stamina is just too great, Luke is going to tire loooooooong before Wolverine shows any signs of wear and his healing factor is going to keep him operating at peak levels for a long time. This isn't a fight going to decision, this is a fight until one of them goes down for a ten count, and Luke Cage isn't going to win. Luke is either going to pass out for exhaustion or the accumulative effects of Wolverine punching him in the exact same over and over spot for 35 rounds. Luke's class 40 strength isn't going to cut it - Wolverine can just out last him, this is the guy who fought Omega Red for sixteen hours straight after all.