Not all sensored ESC's can handle a non sensored setup.

A sensorless setup is basically also sensored but then the coils of the motor will sense the position of the magnetic rotor. Problem with that is the rotor need some rotating speed to produce a high enough voltage pulse in the coil that can be read by the ESC. That is why the motor cogs when you want to drive slowly away..

Sensored setup will move the detection to so called HALL sensors (electronic magnetism sensors), they do not nee a small rotation speed to sense the rotor and can even sense the position when standing still.

Sensored will give a more smooth start and control over the motor. And you can mechanical adjust the timing by rotating the sensor board whil with a sensorles it can only be done within the software of the ESC.