Do Soldiers in the Infantry have higher GT scores than all MOS's to exclude Military Intelligence?

I think you would be correct to say that the Infantry having some of the highest GT scores on average would be false. However it is true that many Infantrymen have have extremely high GT scores, far higher than what the stereotype suggests. GT scores in the 110s and 120s are very common.

I enlisted in the Infantry with a GT Score of 135. It was not greatly appreciated by most of my superiors. Far too many questions and far too many suggestions on how to do things better/smarter. So I switched to MI and became a CI Agent. But I never left my Infantry attitude behind so that wasn't a great fit either. I will tell you though that GT score isn't everything. Many Soldiers I worked with had lower GT scores but were better Soldiers than I was (and I was pretty good)

In order to qualify for Infantry you need a CO score of at least 90, so GT isn't really even the primary focus. There are some MOS that require a certain GT score such as Journalist (GT of 110 is the minimum) however most specialties use other criteria such as EL (Electronics) my old MOS 35E used to require a 110 EL score. Since there is no minimum GT score threshold for Infantry, and there are many other occupational specialties that do have a minimum GT score in the 110 range (not necessarily MI, they usually depend on ST score), it's extremely unlikely. http://www.military.com/join-armed-forces/asvab/asvab-and-army-jobs.html