I will cut your discussion guys about age issues and like to discuss this interesting topic.
If you guys noticed on the last fight of Donaire against a much younger like over 10+ years of age and in its prime, we saw the speed of Donaire doing some multiple jabs at the same time while connecting some strong punch as a combination. What Donaire did is, he just continue with that strategy until Gaballo feels the pain in his body then eventually he can't handle it anymore and goes down.
That strategy of Donaire requires a big amount of stamina and yet he managed to do it even already not in his prime. That shows us that an active boxer will defy his age. That strategy can work against Inoue but the amount of stamina should be doubled or tripled because after all, Naoya Inoue is on a different level and the most dangerous boxer currently at 117.
We all know how intense he is when he goes in training and stamina is one of things they take care to so for this its mot surprising to see him very on this fight as Nonito is known to be a well disciplined fighter. Also he's fighting a bigger opponent which defeats him before so for sure there's no question about how hard his preparation taken for this fight and for sure he aim to take revenge then take the head of Inoue before he retires.
In terms of determination, we cannot really fathom how long and how far would Donaire take to step-up his game more especially for the fact that he had been defeated during their first encounter. That was his motivation and he will seek revenge knowing that Inoue could feel his punches, so he should connect more often than he did last time, I mean both of them will improve and we will see an another version to the both of them. This fight is surely an entertaining to see because both of them is willing to go for a toe-to-toe fight.