Werdum, Barnett, Hunt, Arlovski and Rothwell in the top ten, Nog, Overeem, Nelson and Mir arguably top 15. Miocic's still unproven and Browne and Silva are cheaters (one in the cage, one out) who are only in the top ten because they were able to get their arses kicked by Overeem so much that they activated his "winning until he lost" mode instead of actually beating him like Rothwell did.
Fedor fought his last fights at a solid 240ish pounds with crisp striking and intelligent gameplans. Throw in the TRT ban and in 2014 none of his losses happen. Cain and Junior are his only threats and it's not hard to envisage him relegating them to #2 and #3 like he did with Nog and Cro-cop. The Fertitta's have one last throw of the dice at saving their dying company; bet everything on coaxing The Last Emperor out of retirement and getting him that title shot.