I'd be surprised if Cain doesn't finish him, especially with all the talk of him hitting like a girl.
The main problem with JDS is that he almost completely lacks the ability to counter-strike, especially when he's being pressured. With that and Cain's superior wrestling and cardio, it'll only be a war if JDS can survive the first two rounds again.
All-weather fan of:
HW: Cain, JDS, Carwin, Big Nog
Lhw: Machida, Shogun, Rampage, Lil Nog, Mousasi
Mw: Anderson, Shields
Ww: GSP, Diaz, Maia
Lw: Diaz, Pettis