What is This Shake Shack Signage Doing Out in San Francisco?

Speaking of Shake Shack, check out the above signage. A quick glance at this photo from Eater San Francisco would make a Shack fan think they were opening up shop out west. And why not? They deserve those burgers just as much as the New Yorkers and the people of Miami and the Middle East.

Sadly, no. New SF burger shop Super Duper Burgers has just decided to go for an eerily similar design.
· Sneak Peek: Super Duper [~ESF~]