Tyson would get completely and utterly messed up in MMA or UFC if he fought even a half decent fighter in there.

Why? Cause boxing skills dont mean shit when your on the floor in an armlock of strangle hold. The only chance Mike would have is a KO punch at the start of the fight, seen as UFC and MMA take place predominantly on the ground.

Dont get me wrong i love boxing, its the best fighting entertainment out there, much more entertaining than UFC or MMA but the simple fact of the matter is that its pretty useless against and grappling orientated martial arts such as Judo cus people dont stand at distance and wait to be punched. Think about how many clinches there are even in boxing, every one of those clinches would be the martial artists area of expertise and thus he would wipe the floor with a boxer