we have one Spanish TC (from Sumco), "1500 W",
and another German TC, "3000 W",
they are identical. Both have 1.9 kW (mechanic) rated power, both behave exactly the same. Both have 115 Nm maximum measured torque, 24% max hill climbing power. The 3000 W is a marketing trick: Connect a 3 kW motor to a 40A/60V/2.4 kW (electric input) controller. The controller has ~10% loss, the motor has ~10% loss, so you get 1.9 kW.