CNETAnalysis: Windows 8 has been getting a bit of a rough ride lately, and even Microsoft’s friends have been at it: Asus’s chief financial officer, David Chang, told reporters that “demand for Windows 8 is not that good right now”. That’s not what Steve Ballmer says: according to him, Windows 8 is doing enormous numbers. By enormous, we really do mean enormous: Windows 8 has sold 40 million licences in just one month, and upgrade sales are higher than they were for Windows 7 . Not only that, but Steve Ballmer says that Windows Phone sales are four times higher than they were last year , that there are more than 1,500 different Windows 8 PCs, and that the Windows Phone Store has more than 120,000 apps. And that’s numberwang! Hold your horses, says our columnist Gary Marshall: what do these numbers actually mean? Windows Phone sales may be four times larger, but four times larger than what? “If you ask Steve Ballmer for actual figures, he gets all sh