I've used this for ages with TC, usually with things turned down to a minimum so bails are rare and a nice surprise.
I'm currently using it with X3:AP and I don't think it's working. Despite turning the bail chance and hull level up quite high (5 & 5, usually 1 & 1 for me) the ONLY ships I've found that have bailed without my help are Argon Discos. Really, I find at least one of these in every sector where there's been a fight.
I do often see bunches of Astronauts that have evidently bailed from a ship, however there's never a ship!
I recall that ages ago I used NPC Bailing in TC along with LV's Race Response Fleets and RRF ships NEVER bailed. I'm assuming that's what's happening here, as RRF is part of X3:AP, however it's not just military ships that aren't bailing.
It's no big deal, just that I liked having the very slim chance of encountering a bailed ships I had to "rescue"

Edit: Ok, after much testing and near prooving it to myself that NPC bailing wasn't working. Not five minutes after posting I get an M2 Boreas bailing OOS. I was deliberately monitoring ALL sectors and I'd not had a peep of anything bailing prior to that - just astronauts. Guess it IS working after all, though the bail rate is MUCH lower than for the same settings in TC.
Thought: Possibly RRF adjusts NPC pilot settings making them less likely to bail - I think NPC Bailing uses certain pilot settings that control agression etc. not 100% sure though.
Scoob.