You are probably correct but.....
Obama has an underlying thug-type personality that he keeps bundled up so noone can see it hence the Biden choice. There are youtube videos where you can watch and listen to BHO change into an entirely different personality than what we see in the news. When he isn't concentrating on how he speaks and acts he becomes, like I said, thug-like. Many people have commented on his lack of communication skills without a prompter and speechwriter, underneath, he is just another streetwise punk, IMHO.