Chael Sonnen will win a lopsided decision or he'll GnP Silva out. He'll avoid the mistakes he made last time................but, there's always the possibility of Silva catching Chael with something big on the way in though. It is Anderson Silva after all.
I too think the rib injury was a factor in the fight, plus Sonnen's use of steriods may have helped him. I just think that if Anderson's healthy he's at a level higher than Sonnen especially in the striking department. Sonnen will have more trouble getting Anderson on the ground in a rematch, i'm pretty sure about that.