Although Mr. Gruber didn't say a whole lot about the statistics, I do want to analyze this statement,
I take this to mean that the iPad and iPhone successes are separate incidences. I think the most important implication of the graph is that there has been a direct correlation between each device and it's successor, and how they build on the success of the last generation.
This graph also shows the significant impact that customer trust has on future sales. The hard work that Apple has done to gain the trust of iPod and then iPhone users is paying off in iPad sales.
Graph By Horace: https://twitter.com/#!/asymco/status/165132406456729600
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