I've heard the argument many times over about whether a technical skill minded individual makes a better pilot type than the more *liberal arts* type of person.
Technical people can excel in certain aspects (maybe the systems for example), but bigger picture thinkers (meaning not necessarily black and white) can handle the uncertainty and fluidity of the the flight circumstances and are more likely to be able to handle situations that don't have right/wrong answers.
I'm sure there is a study to back up the point of view that each makes the better pilot candidate.