Let's be honest about how politics work: if someone doesn't want to see Obama elected, they'll find a way to criticize his VP pick. If it were someone who had less "experience" (however people feel like defining that...) then the complaint would be that the whole ticket isn't ready to lead. If he picked Clinton, then he'd be caving in to pressure.

Nothing that Obama does is going to help him win among people who already want him to lose, which only makes this kind of 'analysis' that much more obviously disingenuous.