There are very few fighters who've truly looked unbeatable through a significant portion of there careers. Coincidentally, they're all some of the most well rounded fighters we've ever scene.
Fedor, GSP, and Aldo.
If Travis Lutter had any power, he would've finished Silva with that mount, Hendo had him in some trouble. Dont need to say what chael did to him, still a great champion.
Beat a prime Big Nog 2x, Mirko Cro Cop, Mark Coleman 2x, Tim Sylvia, Arlovski and Heath Herring. He beat the best of the best in the HW division when he was in his prime.
I think Anderson and Fedor. Specially Anderson, the way he made his opponents look like they were several levels behind him was crazy.
JDS all the way through the title win, he destroyed everyone and never looked vulnerable.
Oh that was to see if anyone would say that Conor's reign already trumps all the others or if anyone would say that Conor's reign is one of the top 4 ones in that list in terms of how unstoppable he has looked. If anyone would say he has Penn, Machida, Wanderlie, Liddell, Lesnar all beat and if he is up there with Anderson, Fedor and Matt Hughes and maybe even has surpassed them as well. I mean, the Conor is the greatest of all time stuff already seems to be in overdrive now.
Easy.....Fedor Emeleinenko, followed by Wand
He hasn't lost yet, so why did you disqualify everyone else who hasn't lost yet except Conor?