Corrales was easier to hit, and Rosario hit harder, but Corrales is miles ahead in terms of toughness and stamina. Both have shaky jaws. Rosario should go straight after him and hope he can hurt him early and put him away before the halfway mark. If this goes late Rosario is in serious danger.
Rosario was one of the most viscous punchers in history at Lightweight (ask the "Iron" chin of L Bramble) Corrales was extremely brave and tough as nails. But that would be his downfall against a fighter as skilled as Rasario. A fighter doesn't survive very long by asking A fighter Rasario caliber to tee off on him. Corrales would be game. But not talented too enough to control Rosario's onslaught. A Ko for Rasario.
Yeah, I just wanted to see some input, but I agree with the consensus. Chico would have a great chance if he could survive the first 6, but admittedly, I don't think he would. This isn't like walking through Frietas. Chapo inside of 4.