Good job.

Corley's power is underestimated. Also, when you don't give a guy's power any respect, you usually get hit with punches you don't see(even Floyd). Also, when you try to evade an opponent with your hands down, and take your eyes off him (Zab), you get rocked. Plus, Carlos Baldomir is 180. Tszyu has heavy hands.
Didn't Mickey Ward drop Zab with a body shot, just like a whole bunch of Ward's opponents. Not trying to defend either guy, I can just relate to what you wrote. I'd say neither Cotto, or Zab has a great chin, but getting rocked by the guys that have rocked them, is nothing to be ashamed of. Edge goes to Cotto's chin.

And like you said, If Cotto takes Zab's shots well, then he has at least a descent chin, because Zab will land.