There is an old adage that a good wrestler will beat a good boxer anytime. Think this can go for a good MMA fighter against a good boxer. Tyson was one of a kind but there is always a Buster Douglas somewhere down the road just waiting.
Tyson was the Man, no doubt about it. But boxers are one dimensional, while MMA's have more body weapons to use. Knowledge of leverage, pulling/pushing, gripping, grappling, take downs, floor fighting, etc, etc, etc. Even a good street fighter (which Tyson was at 12) could do very well against a good boxer, Tyson included. Gouges, bites (remember when Tyson reverted back to his street fighting day by biting an ear), ear, nose and nuts ripping, etc are all normal moves for them. Good street fighters have the ability to fight in a phone booth (when there were phone booths) and beat anyone. A boxer needs room to be fully affective at all. This can go for Karate players as well, they need room. Get up and in the face of either and see how well they adjust to that. A good MMA fighter should be able to handle up close fighting very well.
Like with lifting, SquadFather has no real knowledge of boxing, fighting or much of anything else. Wonder if he has ever been in a real fight. ( maybe when he fights with his mother when she wants to wash his skid marked and cum stained jockey shorts) Oh sorry, I forgot about all those "Owning" stories he use to tell everyone. He just starts threads to be noticed and needs the attention I guess. Poor lonely guy, have pity on him.