I'd add that how much rationality I ascribe to someone with a particular religious outlook has quite little correlation with our agreement on object-level beliefs. That is, I find a dogmatic Calvinist to be more likely to think rationally than a person with some vague hodgepodge of beliefs, although the latter will be more likely to agree with me on evolution and on social issues, because the former's beliefs are (to some extent) optimized for consistency while the latter's are generally not.