The entire "AmErICANs dOnT kNoW 1/3>1/4!!" thing rests on AW'S declining sales not reversing from an ad campaign.
If tomorrow, Arby's starts offering 2 extra slices of meat with their sandwiches, and then you didn't buy them, would it make sense for me to run around saying "Haha Carl@sh.itjustworks doesn't know how addition works! He doesn't know when you add 2 to something you have more of it!"