A patch has been released to put in specular maps back into the Xbox 360 version of
Fallout 3. Specular maps makes some things shinier and also allows for a little more detail to show because of this.
Digital Foundry has some good comparison pics of what you can find when you install the update and before the update. Now, textures are still better on the PlayStation 3 and some effects aren't in on the 360 version still so the PS3 still has the edge visually. But, 360 owners can go back in time to Anchorage, visit the Pitt in the future, and help out the Brotherhood of Steel later on while the PlayStation 3 folks can just have a little better look of the world. I'll play on the PC where I can get the best of both worlds than you.