I've not been watching the buildup but I've heard Canelo is mad as anything at Chavez(his brother lost by KO to Chavez's brother recently, family feud with lots of pride on the line)... could either work for or against him being so fired up. I think Canelo has always been short tempered so I don't think the emotions will affect the fight against him too much(stranger things have happened though), I'd say Canelo by stoppage too but Chavez is the naturally bigger fighter and has a good chin so it may be accumulation that does the job.