I’m not an engineer…It’s the type of PM and how it “records” angular velocity which determines whether power is inflated or not.
Stages is subject to inflated values because it records one revolution as one event. The increase in angular velocity therefore skews high. Other PMs measure many many more times per stroke nullifying the constant velocity argument. SRM calibrates with round rings to get slope which they say is exclusive to that PM=doesn’t matter what type of ring you use.
“Torque is torque”. Other PM’s such as Powertap measure at the hub so no inflation. And on and on and on…