They are obviously the same thing. I don't see how people can tell their differences.

Let's say if:
There were a group of cups filled with either Coke, Pepsi, or another soda brand similar to Coke and Pepsi.
AND
You didn't know which cups were filled with what brand of soda, and had to guess which cups had which brand by tasting them.

How many of you would actually be able to tell which was which? I know I wouldn't.