Oh thats an easy one. It's because of the Evolution of a Sport which was in his baby shoes back then.
Totally agree. MMA is still evolving. If the 90s were baby shoes, then the 00's were adolescents...the next decade is going to make the guys from the 00's look one dimensional and unathletic; to compete at the highest level in the coming decade, fighters are going to have to be trained in all facets of the game from a young age - no more "I'm a wrestler and learned some boxing", and they're going to be a hell of alot more athletic - we're starting to see it just a little bit of that now.