Gears of War 2's sales look like they will probably eclipse the original's already stellar sales. Gears 2 hit 3 million within 4 weeks, as opposed to , which took ten weeks. The original sold 5 million copies and is currently the second best selling Xbox 360 of all time, . The top title? Halo 3, with , which sold over 3 million copies its first week. Looks like Master Chief and Marcus Fenix are about to engage in a rough battle.