Re: Obama perceives himself fourth best President...
He probably felt that way too, after he thought about what he said. That's why he probably asked it to be removed from the interview, after he thought it over, and for the very reason you suggest, it does sound arrogant and narcissistic.
In other words, he pulled a Newt. By itself it doesn't mean anything. Now if he did or believed stuff like that all the time, there might be a problem.
But that's my opinion.