I do believe you're grasping at straws here. There are a great many customers who walk into GameStop everyday who believe that both Xbox One and PlayStation 4 play XB360 and PS3 games respectively. It is a nightmare educating consumers about these machines because they can't be bothered to look up the information on their expensive ass iphones/galaxy s3s. We still have customers who believe any PS3 will play PS2 games.
The more blunt you are about information, the better off you are.
Also, the handmade signs, balloons and tables are done throughout the year for a variety of events and reasons. If Sony would send out PS4s at the same clip MS sends Xbox Ones, they would be on the tables as well.