It's hard to pick for this one, because everything is aligned to an upset. Planets and circumstances make this fight in Casamayor's favor for once.

Both haven't looked THAT good since they parted.
I'd say Diego learned more out of the two, he's "more veteran" than Casamayor IMO.

But by that definition Diego's been through more UPs and DOWNs than Casamayor recently.
Also Diego's draining too much weight at this time, IMO.

hmmmm........ If I were a betting man, I'd bet Casa.
But since this is a pic....... hard to choose,
because I think so highly of Diego's progress.