Despite some of the more crass and negative comments here I believe Bass has a point. If the comparison is Linux to Windows kernels that sounds pretty fair. Does the chart include Windows embedded too?
With Microsoft's push to devices I think it make sense to include all of the above. Windows Embedded has been on the market for quite sometime so why shouldn't Ford Sync and the like be included? As developers aren't we interested in more than just hardware that sits in front of people's faces?