One of the strongest points in Windows is the support that Microsoft offer to developers. The MSDN, Visual Studio (IMO the best development enviroment of all), etc are powerfull tools that help a lot to develop software on Windows, they offer training on coding best practices, software engeneering (for their platform obviously). Most of the value of the Windows platform comes from the vast library of software avaliable to it. MS always knew that 3rd party support was important for the Windows and they will try o apply that to the X360, making development for the X360 easier, cheaper and faster.
Sony is putting quite a burden and costs on the developers.







