Don't think so though I haven't done a direct comparison. I bought a couple of the standard models of the Anniv cars. They seem to be identical. I know the Honda HSV feels the same. Bought two more of those and tuned 'em up. I count 'em as a free gift to use while leveling up through career mode.
There was a full list posted by both GT and Gamestop, but I can't find it. The cars had either more hp or less weight. Plus a higher pp. Here is a short list...