In a post on the company's official message boards, community manager Robert Bowling states that while the PC port does have the smallest market share of all three versions of the game, that doesn't mean the PC version is not a big seller. He writes, "The PC version of Modern Warfare 2 has actually outsold the PC version of Call of Duty 4: Modern Warfare in its first week. Making it the most successful PC version." Specific sales numbers were not mentioned. One wonders how many more copies would have been sold if Infinity Ward had opted to support dedicated servers.
Gallery: Modern Warfare 2 Screenshots