That's all possible. I don't watch the Warriors enough to disagree. Although I do think you underestimate Dray's ability to guard anyone. He essentially shuts down the PNR single handidly because he can switch on the guard onto the big man and vice versa. It allows Bogut to anchor down in the paint and not guard on the perimeter.
I agree with that. I think he matches up bad with guys like Randolph though. Really there aren't that many teams nowadays that have two low post options so it's easy to let Green guard the stretch 4s of the world.