Edit: It will never cease to make me laugh that I get more genuinely serious discussion comments on my meme posts in /c/Memes than anywhere else. I'm not hating, I love it.
Their success came from it being specifically longer. It's much harder to visualise a bigger surface area, like how a 10 inch pizza is bigger than two 7 inch pizzas. Subway on the other hand only stretches it in one axis, so the number goes up faster.
I don't want long burgers, although I don't know why. Big fan of the circle.
Some poboy shops here sell a long burger. My gym buddy used to regularly eat the 8 patty footlong double. Must have been a pound of meat on it, never mind the cheese and other toppings.
Size factors are tricky and the issue with fractional weights. I say we make wider Burger circles and number then in onces in the USA and grammes in the rest of the world. I want my 200 Burger and my 400 Burger wide.