On hdtennis I saw an article on Soderling's racquet and it said its swingweight was 384. The stick is not heavy - 357g. How did they get such a high swingweight? Only lead at 12? Also, it says Murray's racquet has a swingweight of 404g. How do these guys keep the ball in, doesn't it fly long because of the power behind the shot? Also, does a higher SW help you get more topspin or is a lower SW better for that?