It is since we started shipping Gnome 3.0 in Fedora 15 that I feel the Fedora branding was reduced to almost zero. You can, with a good confidence, instantly tell if a user is running Windows, OSX or Ubuntu when he attaches his PC to a projector. Not so with Fedora and Gnome.
With GNOME3, GNOME's visual identity is clearer than ever before. I am not sure about Fedora, but one can instantly recognize if a computer is running GNOME3.
Cheers, Debarshi