So after a guy completely disrespects you, calls you out, says you will lose, throws everything at you that he can, and etc, you go out there and absolutely DOMINATE the guy and make him wish he was never born. All of a sudden, you are supposed to respect him? For what? All the guy did was run his mouth and not back it up?
If Brock has a fault for his post fight antics, its that he takes things to heart. I'd rather that then the guys who fake being a heel to sell a fight.