[Brom]

I'd like to add to the argument that SEALS, Rangers, etc. are trained to kill, while UFCers are only trained to tap someone into submission.

I think that UFCers could kill someone almost as easily, it's just that they know not to go that far. Think of how unlikely it is that a SEAL would even know how to get out of a simple submission move such as an arm-bar. Only this time the UFC will pull full force and not stop, and probably break that arm off in a matter of seconds. Now think of how he could apply any number of "dirty" and effective moves he knows, yet doesn't apply in the octagon. My vote goes to the UFC guys in any type of unarmed match.