The girl is 5' 4" in heels, normally she is about an inch and a half shorter, which is exactly Rogan's height.
It would be a nice thing to say Rogan is psychologically larger and doesn't suffer behavioral manifestations of Little Man Syndrome; unfortunately, that would be a lie. The man is a mental and physical midget. He isn't smart and he isn't witty.
The only truly insightful thing he ever said was his admission that he was "just an idiot that smokes a lot of pot." Well put Joey, couldn't have said it better myself.
I'd also like to say he makes up for his many "shortcomings" by being an unbiased, sharp, knowledgeable, professional, and great UFC announcer. But that would be the biggest lie of all.