Goldman Sachs analysts Sarah Friar and Frederick Grieb predicted that Microsoft will have shipped a mighty 4.2 million copies of Halo 3 into the retail channel by the end of the month. That's a big-enough launch shipment for more than a third of the Xbox 360's 11.6 million global user base to pick up a copy. They believe the Xbox 360 will maintain its momentum after the Halo release due to the underperforming PlayStation 3 and the exclusive downloadable content for Grand Theft Auto IV.
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