I take Pintor to win a close decision. The amount of subtle defence and feints would be incredible though, and seeing Canizales' cross-counter coming over Pintor's constant bodywork would be brutal to watch over and over again.
I think Canizales has a decent chance in a 12 rounder, though even there Pintor probably does enough late to win. In a 15 rounder, I see Pintor sweeping the late rounds and winning clearly.