that is true, all i am saying is that there is some formula out there that says speed = acceleration X distance.(i think that is right). and if you can properly acceralte then a longer backswing will go farther technically. but i know that a shorter backswing can help too. the reason short backswings can have power too is if you restrict your hip rotation and get a high x fatoc (angle relation of hip and shoulder turn) you get more power from a short backswing and long backswing usually are leated to letting the hips rotate alot more therefore allowing the shoulders to rotate more which increases you distance, but decreases you x factor. but if one were to swing as far back as daly ( it think tiger is the closest and most flexible) with little hip rotation giving them a big x facor then that longer backswing would result in more SS.

now what i was referring too with holmes short backswing is that his shoulders turn looks good but it seems like he has no wrist cock at all.