Philip Elmer-DeWitt / Apple 3.0 – Philip Elmer-DeWitt
IDC says Apple shipped 10 million Macs in fiscal Q4. Gartner says 5.8 million. – Two leading PC market research firms often disagree, but this time they are miles apart. Cue the competing spreadsheets: Gartner: IDC: My take: Up 40% year over year in one estimate and down 15.6% in the other. Why do these guys have so much trouble with Apple — and only …