Sony is really in a sad state of afair if they have to resort to modifying competitors Wiki articles.  An entry in the Halo 3 wiki was added saying the game would not look any better then Halo 2.  It turns out the IP adress of the entry was linked back to Sony's UK office.  A pretty pathetic attempt to get some Halo 3 FUD out there.

The truth is Halo 3 will look incredible.  The multiplayer has a map editor, the ability to record your multiplayer matches and share these videos with your friends, new multiplayer maps, new weapons and new customizations you can do to Master Chief's appearance. 


Source
http://www.xbox360fanboy.com/2007/09/04/sony-tries-to-secretly-wiki-diss-halo-3-and-fails/