PEPSI > COKE PEPSI FOR THE WIN AMD THEY SEEVE IT AT TACO BELL WHICH MAKES TACO BELL THE BEST PLACE EVER THET ALSO SERVE IT AT PIZZA HUT AND ARBYS BOTH GREAT PLACES SO YEAHHHH PEREEPPPSIII
I have found information that will sum up the comparison: CALORIES: Pepsi: 150 Coca-Cola: 160 Coke has more fizz (bubbles). Pepsi is more sweet. Coke is more popular Worldwide Pepsi is more popular in the United States/Surrounding countries I enjoy Coca-Cola though.
Both, they appear the same at the beginning, but you can taste the difference. Also, drinking only one brand lacks variety.
Coca Cola has less of caffeine Pepsi has slightly more If you want the study, here it is 12fl.oz Caffiene (mg) PEPSI: 38.9 COKE: 30.2