Interesting charts by Horace Dediu: “As a result the Mac began to whittle down the advantage Windows had. The ratio of Windows to Mac units shipped fell to below 20, a level that was last reached before Windows 95 launched. It’s as if the Mac reversed the Windows advantage. This was an amazing turnaround for the Mac. But the story does not end there.” Too bad Dediu didn’t include Android devices in his charts. The picture would change dramatically, and would downplay the important of either Windows or Mac/iOS. We’re in a three-horse race – not the two-horse race Dediu paints.