Originally Posted by
Eric F
Yep. Lighter or heavier bike doesn't change the limits of a person's power output over time, it only affects the results (distance, speed) of that power output.
Basically, if the weight is the only difference between the two bikes, there is nothing you can do on the heavier bike that can't be done on the lighter bike. And you can always make the lighter bike heavier if you really want to, you can't reduce the weight of the heavy bike.