I see this fight as a simiilar matchup to Cain vs Congo. Cain won but congo rocked him a few times and went the distance. Dos Santos is as beautiful striker as there is at the moment in MMA, but Cain's wrestling and cardio will be the deciding factor in the end. I predict stoppage in the third or fourth round with Cain Ground & Pound. Dos Santos just wont be able to stop the takedown and the relentless pace of Cain.