"....over 7 million copies worldwide across Xbox 360, PS3 and PC. Around
55% of sales are on Xbox 360,
33% on PS3 and the remaining
12% on PC. In terms of regional breakdowns, over 4.2 million units were sold in the Americas (3.7 million USA), 1.2 million in the UK and 350,000 each in France and Germany.
Based on the day one figures and the Tuesday release, week one figures should come in at close to ten million units which smashes the 5.92 million week one record set by Grand Theft Auto 4 last year and positions Modern Warfare 2 as the most successful game launch of all time.
In fact, even on a single format (Xbox 360), week one sales are projected to come in at around 5.5 million units - this alone is enough to be the fastest-seller of all time, even without the PS3 and PC versions as you can see below":