And then there's something in between ;)
These put together should make AAPL far more valuable than it is even considering it's the most valued company in the world by market cap.
By the numbers almost any way you slice it, AAPL is undervalued. Forward P/E of 8.86 is insanely low considering how diversified the company is in comparison to say, MSFT or GOOG.
http://blogs.technet.com/cfs-filesystemfile.ashx/__key/commu...
I suspect if you look at the correlation between people who buy / use Office and people who buy / use Windows you'd find something very similar - they're closer to one product than they are to two.
In reality neither company are particularly diversified (ditto Google who are basically still a search company if you look at where the money is made).