On a tangent....
I read a story a while back regarding one of the top poker players, who was willing to wager his own money ($100,000 I believe) to any fundamental christian who could beat him in an advanced mathematical test.
His money was safe, because a mind capable of accepting illogical and unsubstantiated 'truths' would not be very successful in advanced mathematics.
Yes. That's why I'm (currently) valedictorian of my class (one of the top high schools in Missouri) with an H (97% or above) in +Algebra 2 Trig, +Chemistry, and +Biology. And I plan on going to a college like Duke, Michigan, or Stanford. I'm not sure what you consider advanced mathematics, but if you mean Calculus I'm going to get at least an A in AP Calculus BC when I take it.
AKA, I'm really good at math and science. And I'm religious. Go figure.
(Re-reading it, I see you said fundamentalist. Which I'm not, but the point still stands. You can be both smart and religious.)
People certainly can be both intelligent and religious, but statistically people who are irreligious are more intelligent. It isn't a huge difference in developed countries (in developing ones the difference is pretty staggering, as non-religiousness is correlated with wealth and education as well), but it still exists.
It's important to note that statistics is descriptive, not prescriptive. Just because it is rare to have a lesbian trans-sexual fundamentalist Christian with an IQ of 150 doesn't mean that the right set of circumstances couldn't produce such a person, only that the circumstances which would produce them are rare. Similarly, to be both intelligent and religious requires a more restrictive set of circumstances than to be intelligent and non-religious. Specifically (and this is anecdotal), people who are intelligent and religious usually need to be more diligent with their religion than their less intelligent peers, as they are exposed to opposing viewpoints more often and are capable of greater self-assessment. It isn't an indictment of religion; the same is true of intelligence and vegetarianism, intelligence and liberalism, intelligence and a preference for classical music, etc.
Take pride in being a statistical minority (not that the effect is really that large, but still)! As a person who was raised Christian and is one no longer, I'm an oddity as well.