Good point - I originally did that comparison in a context (MCAS) where the pitots were working, and just assumed it was the right answer here. I later found, f

Good point - I originally did that comparison in a context (MCAS) where the pitots were working, and just assumed it was the right answer here. I later found, from the report, that this drone does estimate airspeed as a function of throttle position, pitch, engine speed and air density, but doesn't make full use of it as an alternative.