I'd have to say so. Of course, I'm assuming it is marketing. Somehow I don't see a regular fan out there:
-Pulling this off
-Writing the full title of the recently "Guitar Hero: World Tour" in such big letters at the beginning
-Being inspired by "GH: WT," planning this, and producing it all in the span of three weeks

Nonetheless, I don't really care. It's truly awesome. And I'm probably encouraging Activision's marketing plan by posting the video here for free. They deserve it.

Update: According to Creativity Online (per GameCyte), it was indeed an ad agency, called Droga5, which made this vid. Shocker!

Am I the only person who feels like I can't click on a single website the last few days without seeing an ad for "Fable 2?" I'm talking gaming sites, newspaper websites, political blogs, entertainment sites. It's almost like Microsoft has bought out the World Wide Web (insert joke about them already having done that here). The one below is from the Washington Post.