Leave it up to the historians 50 years from now to say whether it was the worst or not.
^^^
I always get a kick out of "historians" commenting on the present. Even they don't know what's going to happen in the near future, let alone the long term, based on current events. They were wrong with Reagan taking on the USSR, they were wrong with the tech bubble, they were wrong with the near-term 9/11 after math, and they'll probably be wrong here. If I were a historian, I would say that the current historians are the worst ever.
I don't see much 'mistakes' here. (The Economic Historians I know of saw the tech bubble coming miles off..) And anyway what is the point of history is not to understand the present?
In saying that I think I agree that this is way to early fully judge. But to be honest, I expect Bush to be judged as worse than he is already.