I think that what is going to decide respective success this round is games and price. Looking at some (supposed) screen shots of GoW and PGR3 I would say that if within one year MS could lower the price of the Xbox360 to $200 and provide visuals like that it will be tough to beat. IMHO the two consoles will be within a hairs breadth of one another WRT the quality of images they can produce and visuals are what sell games.