I would love to see Inoue taking on against Casimero, not just because of the hype that Casimero brought to make their fight happen but because they of equal footing i guess. And if this fight happens, there would be a KO to be expected. I think Donaire is just too old and slow compared to Inoue nor Casimero.
Donaire is still on his shape, well age do matter but as long as it's still recognizable and he's in shape. We shouldn't worry about him getting in figure while the match isn't on him.
I'm also thinking and being positive that we're going to see a great punch that will lead any of them to victory via ko.
Yes, he is still in better shape and not past his prime, he won his last fight and become a champion again. Maybe age is just numbers for this superior athletes, they are very discipline individual and invested time on themselves to keep in shape throughout.
So no need to underestimate Nonito, he still can fight, although it seems that fellow Pinoy Casimero will have a crack at Inoue first before Donaire.