You have to compare motors with the same type of sensor as a cadence sensor provides constant power as you cycle but a torque sensor provides proportional power to how much effort the rider puts in with minimal power in many situations.. Some hub motor based ebikes with torque sensors can deliver many more miles than their cadence sensor based versions like the Suntour HESC system. Just thinking of the Carrera Suntour HESC based ebikes based in the UK. They have models with only around 300Wh batteries claiming up to 60 miles but for a standard cadence based sensor ebike with a similar hub motor I've often seen 20 miles given. The Suntour HESC system too its hub motor is rated around 60-65Nm which is typically higher than most cadence based hub motors. Perhaps because its a torque sensor they can allow a little more power for short periods of time. However they feel different. The cadence sensor ebikes feel more powerful as they are assisting constantly where as the torque sensor ebikes make it feel like you have bionic legs. It's the same effect on a hub motor as mid-drive motor as long as you have a torque sensor. The Suntour HESC system also feels much better at climbing hills compared to the low power city bike mid-drive motors from Bosch etc but of course doesn't match a full on e-mountain bike with a more powerful mid-drive motor which also has lower gearing to maximise that power those are significantly stronger at hill climbing.