Ya, I watched some comparison videos on a super nerdy website called The Lens of Truth. The only real difference was about 5 fps less on the PS3 and slightly blurrier textures. Otherwise they said they were virtually identical
Supposedly some things, like shadows, actually look better on the PS3 version as well.
Even though Nintendo is saying it supposedly is selling well, I don't know a single person who bought a 3DS, or even someone who has mentioned them. Apparently you can go to any retail store and buy them right now, they had more than enough supply for the launch demand. I sorta wonder if portable gaming devices like this are going to be able to compete with how popular smart phones and tablets have become.