Even with "model numbers" instead of a "performance rating", I think we should be a bit concerned. Look at what's happened to the video card industry and their model numbers; we have things like the 9800, which comes in 4 flavors(normal, pro, XT, and SE), and then the 5900 that also comes in 4 flavors, but SE is a good thing thing this time, and XT not so good. There's just as much potential for tom-foolery with model numbers as there is with the PR system.