One man's statisical look at how Kidd helped the Mavs

I hope someone who is a lot more alert than I am right now can take a look at this and explain to me (very slowly) how in the hell you tabulate a team's "efficiency differential" or what a "Win Score per 48 minutes" means. Then, and only then, I may buy into this guy's theory that Jason Kidd really made the Mavericks a better team with him than without him last year. (See, I go by this unscientific won-loss record criteria, but that's old-fashioned me.)