Tough argument right now. Fedor cant control who he fights and has still yet to lose a single round in his career. GSP cant say that. He got arm barred by Hughes(cant see Fedor ever tapping out, even to Jesus), and he got tooled by BJ in that first round and basically had to win that fight with takedowns. Im trying to picture GSP at like 6'2 225 and the picture in my mind is one scary dude. But here are my rankings.
BJ(when he fights at 155)
Im in Porno's