Top competition? Let's have a look at his last few fights shall we
Andre Arlovski-ko win
Big Timmy- submission win
Hong man choi-win
Lindland-He fought Lindland seriously?
Wagner Martins(exactly, who?)-win
Cro Cop(6 years ago!)
There are exactly none guys that he has beaten in the top ten currently. Well, Nog might be scratching it... but barely.
Between Fedors two best conquests, A.A and Timmy, they are a combined 6-4 in their last ten bouts with notable wins over, Vince Lucero, Buentello, Pudz, Jason Riley, Big Country(2008), and Rothwell. And losses to Ray Mercer, Bigfoot, and Rogers