Perhaps it does, if I cannot sense the clubhead due to the club being too light, I have little to no chance of turning the sweetspot to the ball. Brian taught me to put the entire club on the movie screen, wedding ring up move in the follow-thru. I cannot perform this consistently with too light a club. I understand the theory behind lighter clubs and clubhead speed. I think mass is as important. You know what has not gotten lighter? Sledgehammers. At fifty miles an hour which would you rather get hit by, a mini or a mack truck?