He has that type of personality, in general. He doesn't seem sincere because of his mannerisms - like the fact that he looked as though he was about to bust out laughing. I applaud him on making the effort to do these appearances though. Even if he doesn't 'seem' sincere, I'm sure he is to some extent.
"I like George Bush - he is awsome, funny and would be a fucking killer wingman at the bar - BUT - he is in no way qualified to run our nation and has proven it time and time again" - waynewong