IQ is a measurement of different skills it has nothing to do with knowledge (well a small bit one need to know how to read, and in some cases calculate).
What's that got to do with what I said?
A better one to use would be Japan only 12% of them say religion is verry important and they have an average IQ of 105, While the US 60% of the people say that religion is verry important and you have an average IQ of 98/97
Again, I really don't think such country based comparisons mean anything at all.
Sure there are exceptions to any norm
What are you trying to deduce from any link between religion and IQ? That people are only religious because they're dim? Well, this is simply not true - the existence of highly intelligent believers proves that.