Proof how?
Did you actually measure? Or just eye-ball it.
My DDs and I got out the radar and measured exit velocity. Plenty of room for error there too.
I always say, its about feel and what "fits" a player. Players will always have a bat
that will fit them and the bat will perform the best. Whats good for one, may not react the same
for another. Bats have diff feels (stiffness, flex, weight).
Then you see a post that just says, oh, that bats better because my dd hit the furthest balls with it.
NO, that bat is better for HER