I’m keen to see their reply, however since I’m measuring power from my power meter and not the trainer, the power is the power is the power. I calibrate my Quarq, I pedal to interval requirements, and the power displayed on TR is identical to the power recorded by my Garmin because the power is the power is the power.
The calibration of trainer is moot as far as accuracy of power. Perhaps it may respond to changes in the workout when in ERG mode, etc, I have no idea. But calibrating the trainer when I’m measuring and using power from my power meter doesn’t make sense.
Calibrate your PM and pedal your bike is my take. I’d love to hear different.