We've all seen guys in there 20's get MUCH worse "beatings". Think about it, if fighters stopped fighting after losing pretty convincingly most would never achieve a high level of success. Tim Sylvia had his arm busted and now has a belt. My friend, phil baroni was in some tough fights and went to Pride to do pretty good. Think about the great boxers....most have been through battles. Look at George Foreman, if he listen to nay sayers he would have never won the world championship and won many fights in his 40's. haha, now that I think of it, Larry Holmes beat the hell (easily) out of the tough Ray Mercer, asked the ref to stop the fight as he was hitting him in his 40's. Imagine if he listened to critics.
The fight game (mma/boxing) is not for the weak. It's a tough game and it should not be surprising to see these guys get beat and come back to fight another day. They didn't become golfers, they became fighters.