
Parker posits that part of the explanation is the (mainstream) media's relative agreement with Obama's underling policy initiatives (on which the faith-based office cooperates) versus their suspicion of (or disagreement with) most of Bush's policies.
I'm becoming a fan of Parker's analyses. She's kind of in the Richard Cohen school of unpredictability because of her moderation. Whereas Cohen leans liberal, Parker leans conservative, but in both cases they offer more fresh perspective than the writers who too consistently take one side or the other.