I don't think anyone's cheating either... it was just a funny tag line for the thread. I do think that we should all use the same sticker values at 45/55 though, so people can baseline what the car should be at.... and then see how much better ecomodding and eco driving can get it from there. That was my only beef with it. It threw me for a loop trying to figure out how someone with the same car and only getting a few more MPG could be at 70% over EPA.
Here's a link to a page on that same website that has a calculator to convert older cars to the new EPA standard as well:
http://www.fueleconomy.gov/feg/calculator.html