S.T.A.G.E. on 25 April 2009
Gran Turismo isn't a household name (Why? because humans cannot identify with cars). Halo is, however Gran Turismo will push PS3 console sales for racer fans. Gran Turismo TV will also be a major attraction on PSN. Sony doesn't have a main character which gamers can identify as a household name, who isn't third party.
Gran Turismo won't outsell Halo on the basis of installed base activity.
