Because unlike pretty much any other comparison between games/genres between the Xbox 360 and PS3 the Forza 3 to GT5 is a valid comparison as both games are attempting to do about the same thing. This isn't like Halo 3 vs Killzone 2, you could change the type font and switch the names and stick the two unreleased titles in front of an uneducated (but still enthusiastic) audience and they probably couldn't tell if you gave them Gran Turismo (named Forza) or Forza (Named Gran Turismo) that you've pulled a switheroo on them.
You would probably also find the audience to be more favourable of the title called GT5 even if in reality what they are seeing is Forza 3.
Tease.







