Windows 8 Market Share 23% Larger Then Mac, 13 Months After Launch
That's the correct interpretation of the data.
Those Windows 7 sales are to low end business users in accounting, etc. Bread and butter. Nothing wrong with that.
http://thenextweb.com/insider/2013/12/01/windows-8-falls-6-66-share-windows-8-1-hits-2-64-combined-duo-barely-grows-9-3/ ( 9.3% w8 market share / 7.56% mac share = 123% )