Retailer GameStop has revealed initial sales data for Rockstar's record-breaking Grand Theft Auto IV, with 64 percent of sales of the game going to the Xbox 360 and 36 percent to the PlayStation 3. The data was initially provided to Newsweek's Level Up weblog, with the sales ratio suggesting an almost 2 to 1 sales advantage in the Xbox 360's favor. The website also ascertains, using incomplete NPD Group data, that the percentages point to ... ...