I didn't have time to dig for really accurate numbers, but Microsoft's Xbox sales, which might include revenue from game developers as well as hardware, was about $9.6B for FY 2012. (http://www.microsoft.com/Investor/EarningsAndFinancials/Earn...)

IBM's system hardware revenue for FY 2012 was $17.6B. (http://www.ibm.com/annualreport/2012/bin/assets/2012_ibm_ann... page 30). IBM also manufactures components and licenses hardware designs, such as the CPUs used in the PS3 and Xbox 360.

Microsoft is still not as big a hardware player even compared to an IBM that has sold off a good chunk of their hardware manufacturing.