Well, it doesn't… at least not to me. Hear me out- The idea behind Pepsi's flavor was to use the kola nut for the main flavor, but to make it different from Coca-Cola by making it have a sweeter, more citrus-y taste. read more
There may be something in your body chemistry that effects your taste. read more
Folklore maintains that the first salvo in the Cola Wars was fired in 1975, when Pepsi began its Pepsi Challenge advertising campaign in which shoppers were challenged to blind taste tests between Pepsi and Coca-Cola (naturally, in the ads Pepsi always won). read more