Since the IT script in Stark is also exposed to the archetype of Stark (Script), it wouldn’t be fair to try an compare the two subs. I would say, that the sexuality/action of IT would change into some sort of intellectual realm, or “whispering sweet nothings” as a difference that could manifest from IT. The information on the store mentions seducing a nun, so Stark would have to adapt to this enviroment, and tone back overt seduction for the more hidden/acceptable kind.
Since sanguine is in primal, it can heal issues solved by that sub.
As for primal in general, you will just find your behavior is naturally seductive and relaxing to women without trying. The major issue for me with primal (which could be solved by IT/PS), is just taking advantage of the abundance that primal gave me. I was (still am), restricting my behavior, due to strange beliefs/judgments. I imagine if I was in a big city or something I would have great results on primal.