After watching the rematch of Donaire vs Naoya Inoue, you can see that Donaire no longer has his main advantage - speed and simply does not have time to react to enemy attacks, age still affects him, and by moving to a heavier weight category, he also risks his health
I wasn't expecting that from Donaire because he was aggressive during his younger days fights. I think his age really affected his performance and stamina. Maybe that's the reason why he wants to rest for a while. We can't deny that Inoue has fast hands and strategic punches, he was a big challenge for Donaire.
Age is really a big factor in sports especially physical sports like boxing. Donaire is 39 years old and Inoue is 29, Age is somehow far. Donaire boxing peak or prime is now gone and I think that he can possibly retire now as a boxer. I agree that his battle with Inoue is a real challenge, Inoue is at his prime now and I that time I bet on inoue even though I'm a Filipino.