Without getting into an argument (maybe I don't fully understand what you are trying to convey and I am not talking specifically about Grayson) but, I disagree with this statement. Linear progression down the mound, creates energy from the back side leg. This is critical for both velocity and command. I've been fortunate enough to discuss this a pretty good length with some very high caliber folks. If you are trying to say that not everyone has the same "optimal load" on the back side, then I agree completely. Everyone is different.