pro mma fighter vs. US. Navy SEAL

Answer 1

 Ok.

MMA is a sport, you trained On technical aspects and expected to last rounds. It is a martial art and trained to win in a match.

Military (Spec Ops esp.) fighting has the sole purpose of killing. That is why civilians cannot learn mil style (Example; Military Krav is not taught outside of military. The civilian available Krav is watered down for the intention of MMA)

In a MMA fight with rules-MMA fighter would win

No rules to death- SEAL would win

PS Randy Couture was an army officer and thats where he learned to fight MMA.