As an avid fan of MMA i would say this. Fedor is the greatest fighter out there to date. Honestly Brock Lesnar is in no comparison to what Fedor has done and should not even be in the same sentence really. Just because he is UFC's heavy weight champion doesn't mean shit to the world. But if Brock were to fight Fedor, he would lose utterly bad. Remember, Fedor can take punches, as he has proven and still submit anyone or take them out punching back