I second that. I know nothing about business schools and can't help you at all, but I know through family that in the law school hiring process, "job talk paper" means something very specific. It's a law review paper that you structure your whole talk around, and I believe the actual paper is circulated to the faculty beforehand, so they will have read it and will be ready to pounce with criticisms. I've heard that it's even advisable for it to be at a very particular stage in the publication process— ideally, it will be ready to submit but not yet submitted, so that you can honestly say that you will integrate the comments that you get at the job talk (I know— it all sounds really weird from a psychology perspective). No idea at all if that generalizes to B-school, but I would absolutely consult with insiders.