Michael knows his stuff, and so maybe you should listen to him. Obama is the candidate of blacks and academics and other Bobos--including big-time bureaucrats. Hillary is favored by everyone else (at least in PA). She is the candidate, right now, of the Jacksonian Democrats. She can also end up winning the popular vote, giving a moral impetus to the superdelegates to prefer her.
BUT: There is no real popular vote. And there are competing theories of how this mythical entity is to be calculated. Consensus will not be reached, and Michael does a great job of explaining why. Obama will be ahead in the only real category--delegates won. As long as he is ahead there, he can’t be denied, for reasons I’ve already explained.