Originally Posted by strych9
It isn't the crank handle vs electric motor.
It's what's inside the door. Crank windows require a lot of heavier metal components, and electric hardly and additional metal at all. The motors are thin and lightweight. No comparison.
No, it's the motor. Look at any recent cable drive window regulator. You'll see the rails and cables and mechanism are pretty much the same between the two with the exception that you have a motor and a bracket. The difference is the motor weight, not the mechanism.
You might be thinking of the old arm and sector type drive mechanism and even then.............it's the motor.