Geezus, does nobody read any of these posts?
It is completely obvious here that:
1) If the fight is in a cage, with MMA rules, then the MMA fighter will have the better chance at winning. This is why you don't see SEALS or marines mopping up at UFC. They are not trained THAT specifically.
2) If the fight is out somewhere in the real world, in an alley or wherever, the special forces guy wins. He would most likely utilize some sort of makeshift weapon (a bottle, a rock, whatever) and use it to his advantage. If there is nothing available, he will kick/punch the UFC guy in his balls/sacrum, gauge his eyes out, or any other "illegal" move that he can use to KILL, that would not come immediately to the MMA fighter.
Is this really that hard to understand?!