Silva wasn't 100%, either by alleged injury or because he hasn't trained very hard the past few fights. (see: the Maia shenanigans, or training with Steven ****ing Seagal)
Fedor takes stupid amounts of damage in his fights and takes risks, just because he hasn't come across a dominating wrestler with a gas tank is probably the reason he hasn't been on his back for 20 minutes. The Hammer House guys weren't chumps, but even in their MMA primes they weren't in the same league as guys like Velasquez and Lesnar.
GSP takes very few risks ever since Matt Hughes caught him in that armbar. He outclasses everyone in technical grappling. It will be interesting to see if he can resist Kos' takedowns, and down the road, match up with Jake Shields, who has a similar game.
Adopt-a-Chief: David Mims #70