He sounds fine. Don't know why anybody would think that he sounds punch drunk. People are mentioning stuttering, but it wasn't noticeable to me. I think people are reaching.
He does sound like he drank a shit load of Coffee though.
I guess this is as good of a time to bump this as any. like you said, I think people are just reaching here.
unless he just developed brain damage between now and the Gil fight or something (which I don't believe). I just think he gets nervous when he speaks in front of a lot of people. he seems fine in his one on one interviews.
stuttering does not mean brain damage. this is punch drunk (and sad):