Originally Posted by CarbonJoe

I think most of the use for dual mode is for modified motors, and maybe off-road. Since in dual mode (or complete sensorless mode), the ESC doesn't know the exact position of the rotor, it has to be a little less aggressive than it can be in pure sensored mode. Thus, it should be turning more RPM in sensored mode because the timing can be more precise as to when to apply power to the poles of the motor.