NO


Compare the ke of the 2.This is where the ke is relavant.


From 2 different bows,you go from an arrow with 76.8 ft/lb's ke to 67.2 ft/lb's ke with the same arrow.Apples to oranges.



Same bow changing 20 fps with 2 different arrows will only change the ke by 2 ft/lb's and the heavier arrow will have more and that will help with trajectory.Apples to apples.