Chocolatito. He has a good enough chin to take Donaire's left, and was skilled enough to not have to much. I tend to think Roman's workrate wins the day, and his speed helps him stay safe in the process. His combos at 112 were still damaging and he could get them off quickly there. If he lights Donaire up with a few of them, he may think twice about opening up. If Donaire stretched him though, I wouldn't be that surprised.
Donaire was far, far too big and power for Choco. Choco is the more skilled, more cerebral fighter, but it wouldn't matter. He's physically outgunned. Donaire inside of 5.