Of course, I’m sure 120k+ AP starting positions exist. I didn’t say AP positions are strictly in the 90-110k range. That’s the ballpark and you can find observation points above and below that range.

My point was that PhDs often choose a lower comp even when outside option is available, which is a different situation from master’s. E.g. Business professors with 180k+ salary can find higher paying positions in industry if they wanted to leave academia. So wouldn’t you agree masters vs PhD salaries are not comparable because of the selection bias?