Yeah I had someone give me a P/P (while everyone else gave me G/VG) and his actual feedback didn't seem to be very negative, other than pointing out that the research proposal was a bit rough and needed more development, and my recommendations didn't mention support for my specific research path. I have no idea why he gave me a P for broader impacts, since he wrote about those broader impacts factually and then concluded it at that without any mention of where his opinion that the broader impacts were poor came from.
There were a lot of great applicants and I'm not bitter about not receiving it, but I am confused by how two of three gave me reasonably good scores and this one guy seemed to absolutely hate my application.