Possibly. You can get motors running 90+% efficiency, but only in a more or less narrow power band. If they can improve the efficiency in the ends of that bell

Possibly. You can get motors running 90+% efficiency, but only in a more or less narrow power band. If they can improve the efficiency in the ends of that bell curve, even if it's not an overall efficiency increase across the entire power/torque/rpm/"throttle" range, they might realistically be getting a 50% increase in "real world" use... Especially if they can do that in a way that removes the need for a gearbox (to keep the motor in it's highly efficient range).