Any family with more than 5 people are going to be completely locked out of PVB, not counting the bungalows. 5 in a studio, even one the size of a PVB room, is going to be tight. I don't think a family of 5 is going to book PVB that much. I don't know the stats, but I would guess the fact that PVB is studios only pretty much discourages about 1/2 of the DVC membership from staying there at all.
You know the joke, right? How do you know when a timeshare salesperson is lying? They're breathing.According to my guide, there are people out there buying a crazy number of points for fixed weeks at the Bungalows. So I concur with you that they must have done quite of bit of extensive research on this before they were built. Can't imagine them messing around with the point charts THAT much (but has this ever happened before - a substantial altering of points?)
DVC is about choices for YOUR life. Thats why their are so many choices.