I'm a bit unclear of your question, but simply put, each bike format uses a different means to merge pedal force with motor force, and will give each rider on each bike a different result. The Zuma and Vibe reads pedal speed, with a couple motor power settings to respond, but does not read pedal force like a Dash or Eflow. The range listed is a wide spectrum because we can not be sure how much or how little each rider will push. To best increase the range, use little or no motor force when accelerating from a stop. Once you're in motion, adjust the motor power upward. Just like accelerating hard in a car will give you far less gas mileage.