Really? GSP is running his mouth? You think he's an egomaniac? lol, come on man.
Over the past 10 years, and the ups and downs of his career, you would be hard pressed to find many people that would call GSP anything more than a humble (boring) champion. Sure, Dana pokes him in the ribs every once in awhile, puts a mic in his hands, and tells him to say somethingscathinglike, "I am not impressed by your performance"... but seriously man, your attacking this argument from the wrong angle.
I don't give a shit about GSP anymore. He lost me in 2010, when he lost the ability to finish fights. For that reason alone... who cares if he ever fights Anderson or not.