I think you've been watching to much G.I.Joe with the Kung-Fu grip cartoons and need to take a step back into reality. Yeah, I'm sure I'd be more comfortable sending in a group of MMA fighters to rescue someone rather than a SEALS team. I don't think so.
And as you point out, being an MMA fighter does not automatically make you the baddest killing machine alive.
We just happen to disagree. I've know many Navy Seals and I know how badass they are. Are they all invincible? No, but I Thank God they all think they are.