Maybe, but NO ONE cares. It’s likely more of an internal metric for programs to see how their graduates are doing overall - if they have a bunch of barely-passing peeps in 20th percentile, it lets them know education should be shored up.
I’m honestly not sure anyone gets your percentile. My residency program was big on touting numbers (both good and bad) and one thing never mentioned was advanced exam results. Aside from pass rate.
I also liked UBP, and I used only UBP. I needed organized material, otherwise I was going out of my mind figuring out how to study. I thought the best thing about it was learning to phrase answers concisely, (especially "It is my understanding that....").