AFPC feedback was surprisingly helpful. It was a Lt Col who was the head of promotions, he went over all of the board instructions and then he went through some stuff in my record that stood out to him that wasn't in my prf that he thought should have been and just some writing techniques to strengthen the PRF. And we discussed SSB procedures to see if I could qualify. Ultimately he told me that my record was stronger than people who got promoted but my PRF didn't reflect that and that the board may have read something into it.
My Rater and Senior Rater feedback was worthless. My SR in my feedback when I asked why I didn't earn a DP said "don't worry, you have a great record, you will get promoted " my rater only said that I was his #1 and our pool must have been competitive.