Flavored, vitamin-enhanced waters are all the rage, in spite of the fact that it's pretty easy to argue they have no compelling reason to exist. You may not want to hint at this, even as a part of a knock on your competition.
So, Vitamin Water has 125 calories and Propel only has 25. Advantage Propel, I suppose. But guess what has zero calories? Normal water, which can frequently be obtained without even having to pay for it! I know, I know - shocking. And if you have to do 500 sit-ups to burn off a bottle of Vitamin Water, you're still stuck doing 100 sit-ups to burn off Propel. Burning off actual water? Zero sit-ups!
Of course, actual water doesn't have vitamins - not that you couldn't take a supplement which would also add no calories to your diet - nor does it have a kind of gross, artificial fruit flavor to it like Propel does. So there's that, I guess. But this ad just plays like a luxury car ad where some $40,000 model talks about how their $50,000 competitor is too expensive. "Propel: When you want unnecessary calories, but just not too many."