[nuz69]

The sensor bring precision at very very very low speed like 1 mph, above low speed the system switchs on sensorless mode anyway. That's why most of 1:8 brushless system don't use sensor. You probably feel your tekin smoother than the mmv3 2200kV due to the lower kV, not because of the sensor.
The CC/neu 2200kV handle more power than the tekin truggy motors, so it is logic that it ran a little cooler...