I read that article in the magazine, very interesting read. It makes perfect sense that a) bats of the same weight can disperse the ball the same distance, b) more weight = the ball being hit further and c) designs have become far more efficient (basic evolution).
I look forward to reading more posts in the near future - the type of bats pros use (selecting the clefts, what that's based on, anecdotal examples of requests, etc.) and opinions on what grains are best would be good reads...