prove? i wish you graded my homework. "it's got numbers, well i'm convinced!" this tool is fun for discussion and comparison, but it's so divorced from reality that you shouldn't put too much stock in it's accuracy. last year's results had brad ausmus batting leadoff. good idea, give one of the awful-est hitters in the entire sport 140 more PAs. i know its en vogue for us to think conventional wisdom is always wrong, but imagine hitting your run producers at the top of the order, burying your speedy on base types at the end, giving your pitchers more ABs, and various other types of backwards strategies. you'll have managers asking players to do things diametrically different than they have the previous 10-20 years of their career and you'll breed a team of malcontents as a bonus to reduced offensive production. and don't the other sabermetric studies argue a minimal impact from the lineup order? this has a 100+ runs difference impact based on the batting order for the Cubs example.