Actually all of the the fab four have huge heads: Barrera, Pac, Marquez, Morales - sign of a true warrior.
I've mentioned this before as well. Look at De La Hoya's head. Been KO'd once (real KO) to the body. Roy Jones Jr.- small head = glass chin.
First the singing competition and now this. Of course, it's possible that JMM is just trying to get on Pac's good side to drain Pac's emotional aggressiveness from him. OTOH, JMM could be like this because he knows he's getting ready to cash in on his golden parachute out of boxing.
I love seeing two fighters who respect each other. No need to talk trash to each other. They already know whats going down. It is what it is. No need for B.S. Pure pugilists.