Half the calories, all the what?

I'm sure you've seen the Gatorade commercials for the new low calorie sports drink- oh, I'm sorry, the G commercials. Way to go Gatorade legal department. Anyways, who actually buys that? who are they trying to fool? apparently, a lot of people or else they wouldn't have made it. Riddle me this: If Gatorade is marketed as a sports drink, then it is targeted towards athletes. Athletes who, by the very definition of playing sports, expend hundreds of calories that have to be replaced. Which is precisely why they drink sports drink, correct? to replace calories which are tuned into energy. I don't see what the appeal of G2 is, but I guess there must be a market for it, or else it wouldn't sell. Who that market is is beyond me.