Everyone's instinct when something is hitting them in the head is to cover their head. Everyone. Training makes you do something differently than that. Some people need less training, some need more. Getting hit in the face bothers some people much more than others. But getting hit with a 4oz glove and a 10, 12, or 16 oz glove is a whole different ballgame.
As far as whether he is hurt, I think you two are just arguing semantics. To have a valid discussion about it, you first have to agree on what the word "hurt" means.
I think it goes deeper than that. Although i would agree that with striking the more you get hit the more comfortable you become with it.
Certain guys just panic when getting hit, Wlad springs to mind as does Bruno who i referenced earlier. Career long fighters none the less, who still haven't rectified the problem.
Yeah glove size makes a difference, but 10 oz Reyes and an mma glove isn't hugely different in regards to force. There is a test they did on it floating about somewhere. It's a lot about padding distribution, some gloves have all the padding on the knuckles, which is a pain in the ass if you are trying to get maximum force.
Second point. Yes, i guess that is the case.
He looks out on his feet for more a less the entirety of the third to me, but there in lies the debate.