I don't like Bernie, but he's not going to roll over like Jeb. It would be two obnoxious new Yorkers yelling at each other and fracturing the populist left. I think Trump loses that fight because the populist left has a ton of occupy wall street remnants. Trump could maybe go the unions and police route, but I think he'd get skewered. Zero chance he makes it out of the primaries. If McCain wins in 08, it's Hillary vs McCain for 2012 with McCain winning.
Maybe misunderstood, but it's an insane reflection of our partisan times if you really think there weren't serious political differences between Obama and McCain. The most obvious one is Obamacare does not happen or anything close to it.