Cung Le would beat Diaz hands down. Le has striking ability that surpasses most fighters that I know of, and he can deal with take down attempts. You can't speculate and say he'll get arm barred or something when you've never seen him on the ground. At the same time, faber vs brown will be exciting... I'm in Sacramento and trying to get tickets to see the fight. They're like 50 bucks a piece, though, so we'll see what we see.
better hurry up the fight prolly start in few hours, or at least the prelims