I'd imagine more people would be drawn to the dragon-looking pokemon rather than the chital and their types were only revealed later on so I know initially people weren't drawn to X for the fairy-type legendary.
Interesting. Well I guess I'll just have to wait a bit and see about release. I always go for the less popular copy so I can have an easier time getting the version exclusive from the more popular one. I do think though that Y will be the more popular seller based on what you've all told me.