Ashley has been overscored in PCS since the 2014-15 season. The only reason she gets high PCS is because she's the oldest. She waged a pretty heavy handed PR campaign about how she's a better "performer" because she's older and has had boyfriends or whatever. Apparently it worked. Her fundamental skating skills are just not that great, but with a post-Sochi vacuum, she was able to get a boost in PCS based on politics.
She is a better performer than most. Nor are her skating skills fundamentally worse than the other top skaters. If you're talking about Ashley in the early years of her career, you may have an argument. But you're simply ignoring the leaps and bounds that she has made since she started with Nicks in 2011, and which have allowed her in a period of 5 years to be more than on par with the other top skaters. Her PCS are deserved when you think about her competition.