I think that they have equal capacity for intelligence, but maybe intjs have more focus in certain areas. Ne tends to make nps mind wander but it also allows connections to be made within a bigger picture. If I wanted an -expert- in a -certain- area, I would probably pick an intj. If I was looking for interesting new developments in a field, intp. I agree that is depends on how we are measuring intelligence as well. I read an article on iq once that basically narrowed it down to intj being most likely to have higher iq. It went by introversion vs extroversion, n vs s, t, vs f.. Then again, this is only -likely- and whos to say those statistics on each preference were even accurate? And that is just iq. I don't think it means much at all. I think that there is also a sort of stereotype that goes with intj being more intelligent, perhaps because they are more in-your-face about it, unlike the intp who usually doesn't express it so overtly.