Most well rounded fighter in MMA?

NoRegret wrote:

LudoCain wrote:

Mayhem isn't a bad add at all. He has fairly good striking, a gas tank that doesn't quit, and a ground game good enough to almost choke out Shields(who got saved by the bell), and become the first guy to lose to Jacare by way of decision. Plus the pinkberry song has to be worth an extra point or two.

I guess when I think of the best, and most well rounded fighters, I want people that actually win their big fights as well.

What does that have to do with being well rounded?