How Dumb Are Americans?

For months they have been building a Sheetz at our exit of I-40. It has been highly anticipated since there is no gas station right off the highway. For the record is like the locally owned Family Fare because they have the cleanest stations and stores and the nicest people and honest deals.
As I was driving by the new Sheetz I saw a sign at the pumps that gave me a big laugh. Sale on Gatorades- 2- 20oz bottles for $2 or 2 -28 oz bottles for $3. By my math you are paying more per ounce for the larger bottles. Rather than buying two 28 oz. bottles you should buy three 20 oz and get four extra ounces for the same price.
I am honestly wondering how many Sheetz shoppers notice this? Perhaps no one else besides me cares if they are paying a little more. Am I outraged about Sheetz cheating Gatorade drinkers for nothing? Are drinkers of sugary drinks dumber than other people? Are athletes who are so electrolyte depleted not using all their brain cells when they run into Sheetz for a drink?
I feel like Americans have fallen for so many things this year like, “Yes, we can bring your coal mining jobs back.” Retailers have caught on that people will pay more if you make it look like it is a deal on the sign and just go along with it.
Americans, stay vigilant and be suspicious. Ask questions and for goodness sake, do the math. This is not calculus, you can figure this kind of math out.