We have a visceral feeling against women with high n-counts for LTRs. "Why do you care?" is a common and right answer within some environments, but this topic is recurrent enough, in TRP and outside, when it comes to LTRs. I always argued this aversion as perfectly rational, since she MIGHT have a lot of issues:
- Thousand cock stare;
- Alpha widowed;
- Difficulty to bond properly;
- Unwillingness to offer her A game;
And she IS more likely to cheat. Not might be. There's no arguing here. A person who's more comfortable with engaging in sex is more likely to engage in sex than a person who's less comfortable. One less barrier.

Does this exhaust the subject? Would a woman without those "might" issues be as good as any (because when it comes to cheating, AWALT, we have to be their best choice anyways) for an LTR?

A disclaimer: I'm aware of just how unlikely the existence of such a woman is, we all are, no need to point the improbability as a problem or reason itself. I also know she might try and manage to hide it, no need to go there either.
I didn't manage to derive her impossibility from RP theory though. If you can, be my guest.

Edit:
It seems this isn't clear enough. The question is, besides the exposed, why are women with high n counts a bad idea? Is the exposed wrong?