It depends on how you define "better". Coke drinkers are more likely to have graduated college and speak more than one language. Coke people prefer things like sushi, and might have tasted caviar. Pepsi drinkers prefer American snacks. Coke drinkers read the New York Times, while Pepsi drinkers read the USA Today. Coke drinkers are more likely to own a passport. It's more likely that Pepsi drinkers haven't had a vacation in 6 months. Coke drinkers are more likely to show up early to an appointment, Pepsi drinkers on time or late.