MMA guys would destroy boxers. Floyd Mayweather vs. Chuck Liddell would be no contest. Liddell would win 10/10 times. Boxers can punch, MMA fighters have everything at their disposal and they train everything( mostly everything )
Now thats just being biased. That would be also be a very stupid match up. Mayweather is no where near chucks weight. A better match up would be someone near the weight class of a MMA fighter. You guys hear James Tony is going to fight Coutre? Thats more in the same weight class, and you cant tell me James Tony doesn't stand a chance, hes one of the best boxers currently. Boxers ALWAYS have a punchers chance, so you shouldn't say they would get destroyed 100 percent of the time, on the other hand, MMA fighters do train multiple styles, so of course they have the advantage, not to say they can't lose. Tim Sylvia (hes washed up, bad example i know) got knocked out by a pro boxer, Ray Mercer. I'm not saying boxers will always win, don't get me wrong, for the most part MMA fighters stand a better chance, but people have to remember its a fight, its unpredictable.
By the way, Shogun FTW Knocked Machida out! So happy to watch that, after they cheated him in the first match.