This year's Christmas will come down to price drops... Games are relatively even appealing to different genres.
Who ever times their price drops best will win.
We know PS3 is going to have one... Sony's financials say they will ship 13 million PS3s from April 1, 2009 - March 31, 2010... Considering they have been tracking behind last year where they put out 10 million consoles they have to do something to get momentum at Christmas or they don't have a chance of selling 13 million this fiscal year.
The question is... Will 360 drop as well, and Microsoft has also predicted a rise in sales year over year but they are tracking to do this currently as they are up year over year so far. And then the Wii... If they pull the trigger on a price drop that could hurt both PS3 and 360.