In India you get Coke and Pepsi in bottles. They use cane sugar, and indeed you can tell the difference between coke, pepsi and thumbs up. Simply put in order from the most acidic to most sweet it's almost like Thumbs Up, Coke, Pepsi. I couldn't tell, but I've tried multiple blind tests on my family and friends and they could. After a few times with them you indeed notice a taste difference.