They may still be made by EG and that is how they differentiate slightly, but I wouldn't want someone to pay $500 expecting something and possibly getting another. There is a picture of EG Cardiff's on the "Shoe photos" topic and you can judge for yourself.
Since I have enough difficulty resisting EG shoes at regular price, there was virtually no chance that I would avoid buying ones in my size in a model and color that I've been considering anyway when they were available at a significant discount. The shoes came today, and they are indeed EG shoes. For some reason, they came in a Polo Ralph Lauren shoe box, which might account for the way that Bluefly listed them. They were marked 9 1/2-10D, but for some reason, they fit more like my 9.5 E EG shoes than my 9.5 D EG shoes. Perhaps it's the last (89), or perhaps it's because they're bluchers where my other 9.5 D EG shoes are balmorals. I don't know. It's curious that there were no shoe bags when they came with the RL shoe trees (which rank only behind the two Vass versions of the different models that I've seen) and with the standard EG polishing cloth, minus the EG logo. Oh, well. In any event, they're well-worth the price that I paid.