We INTP's, in theory, have the weakest Fe, so going by that premise, we should be the most anti-social bunch.
Being an INTP myself, I can visualize, for example, how the I, Ne, Ti, and the P are interconnected, but I don't think the strengths of the other cognitive processes can easily be inferred out of the two strongest functions that I have (Ti and Ne).
In terms of how I deal with social situations, I have to admit that I'm not really that much comfortable with large social groups. The more 'shallow' they get (The S function), the more I get out of place. But I never realistically felt significantly alone. Yeah, the thought of isolation is there occasionally but I've always been proactive in structuring my social life.
The TJ's (also known to struggle with their Fe) can always brag about independence, self-sufficiency, and productivity, so in a way, they're creating a self-imposed perspective that it's OK to be alone.
On the other hand, there are some people who recognize that they need to get in touch with people and could be doing a thing or two about it.
The point I want to raise is, does it follow that a super strong Ti messes up the Fe?
I think I have a considerable knack for understanding people (though it may not necessarily translate to empathy or conformity to social protocol). The stronger P function implies a diminished judgment, the Ne/P function can make me 'see' a person beyond what is apparent, and the Ti is a major force in having the sincerity in understanding someone else. I may not be the star of a crowd but I do keep a stable set of close friends.
The difference I notice about myself, compared to the stereotypical notion of an INTP, is my better developed Fi, (that's why I question the arrangements of the cognitive processes, otherwise, my Fi should be way down there).
Though seriously, I really don't know which function is working at any point in time. It's kinda like a tug of war between Fi and Ti right there, but, in cases where a stereotypical INTP don't have Fi as a leverage, would that mean he'd really be the most anti-social archetype?
Between an xNTP and an xNTJ, I envision the latter to be the more egotistic archetype and the one that will most likely stick to his principles. The xNTP, on the other hand, can set aside his judgment so that he can understand the bigger picture.