Now I am a retired old fart but I had it in my mind that everyone with a CPL or an ATPL had to have passed Performance "A" at some point?
Unless my memory has completely given up the ghost, I also seem to remember that Perf. "A" allowed us to take the benefit of 50% of a headwind when calculating runway performance but we had to factor a tailwind by 150%.
Why do you imagine that was?
Am I to assume that AA pilots were never taught Perf. "A" either?