Originally Posted by Terry_S

There's a delay while a sensorless ESC has to 'work out' the rotor position before it can 'restart', it may not be obvious but it has to go through this process. It may not result in cogging or faltering, but there's always a time delay that sensored systems do not have.
Any delay is lost time when you're racing! Sensorless has problems/issues that sensored does not.