Sparklets vs. Arrowhead

I was driving to work one morning - heading down my residential street - when I came upon this. A face-off between the Sparklets Man and the Arrowhead Man. The two were out of their trucks, each standing next to their respective vehicles. I was kind of hoping to see them lunge at each other - locking hands around throats - settling the question of which water is more pure like real men - with a fistfight to the death! No such photogenic luck... As I passed between the trucks I noticed they were yucking it up about something - perhaps about how the bottles are filled with tap water?...