I think the JTHipster's point is the same basic one I made below, the Forrest Gump point: stupid is as stupid does. Basically, all the analytic skills in the world amount to shit if you don't know how to use them.
I just don't think that's a necessary explanation. When people say that Obama is a stupid because he's black, and yes I've heard this, I don't acknowledge the argument. It is literally ad hominem. Same with Bush. Its not like the people who earnestly believe that Bush is a dumbass are going to change their mind, nor will the article change any minds about his presidency. Its just the process of stepping up and countering an argument that no student who has ever taken a debate course should use. If you heard the argument of "well Bush is stupid" in a college class, the first thing out of the professor's mouth should be something akin to a small object flying at the student's head for arguing from a logical fallacy before the fight really even began. In terms of why I'm spending so much of my words on my distaste for his time in office, its because I think that's the point of the objections rather than just defending his intellect. Also because then I could write something rather than just say that I agree. I agree with the basic premise; George W. Bush was smart. That is a very boring post to read. I'm losing track of my thoughts I think I'm going to try and sleep now.