I may as well display the thrust along with the Amp data. This was Frank's data taken independently to include the additional plot points, as Vien suggested.
The Xoar is more linear and the APC seems to flatten out quite a bit in the last 1/6th of the throttle setting.
I use the term, 'flatten out', but it could be either pitch distortion or stalling considering the relative Amp reading. Either could explain the less thrust and less Amps at full.