By Philip Elmer-DeWitt
March 3, 2011

Similar charts have been published, but Engadget’s is the best we’ve seen

Apple’s (AAPL) edge over Motorola (MOT), Hewlett Packard (HPQ) and Research in Motion (RIMM) would be clearer if Engadget had included price, availability and number of apps.

You can get the original here.

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