PA-PLAYA Agree.
And for the guys who are absolutely sure they can tell the difference, have a friend of your signs icant other buy one of each and put the soda into generic glasses. Taste them and decide. Do it multiple times. If you can't get it right about 70% of the time, you are full of it. (For the record, I am talking not talking about the diet versions, which tolme taste dramatically different.)
Here is my take on the subtle differences between Coke and Pepsi. Pepsi is brighter and has more citrus flavor. Coke is smoother and has more vanilla flavor. Other than that they are virtually identical. I don't think Pepsi is actually sweeter. I think the citrus fools the unsophisticated palate.