"I’ll explain why Pepsi sucks so bad, yet somehow manages to win taste tests. If you take Coke and Pepsi side by side in a blind test, Pepsi will win. This is because the bad taste of Pepsi cumulates from several sips (it is an aftertaste effect). So even though I hate Pepsi, I can take a sip or two and enjoy it. After half a can, I’m grossed out. Coke on the other hand tastes good no matter how much you drink, because its aftertaste is the same as its, uh… during taste. Thus, Coke is also better for mixing (who likes rum and Pepsi? Anyone?) because its taste is a constant. People who are expert tasters can tell Pepsi is garbage from sip one. But mortals like you and I fall for the trick, allowing Pepsi to claim that it wins taste tests."
The previous paragraph mentioned the flavoring of cassia, and the following mentioned how sugar holds the flavor.
Thus they choose pepsi.
Outside of contrived taste tests though, people actually prefer the taste of coca-cola but can't quantify why.
Do this and almost anybody could probably tell Coke and Pepsi apart. Just take a swig from each without inhaling it, though, and you'll just get the tongue, which isn't very discriminatory at all, and you just get "sweet" and "bubbly".
Do this and you'll also understand why Coke is preferable. Pepsi is guy on a viola, Coke is a string quartet. Both are frankly pretty limited in the grand scale of things, but Coke is at least complete.
True, but these tests were done when they still used sugar.