This piece makes a strong case that he is: Why Tim Cook is Steve Ballmer and Why He Still Has His Job at Apple. I’d add to it and say that people like Steve Jobs and Bill Gates were great people at a great time and a great place. Steve Jobs wasn’t terribly successful at NeXT: he was still great, but the timing of his ideas wasn’t and the company itself wasn’t either. Tim Cook and Steve Ballmer are very good CEOs, but they are not in the same league as Jobs and Gates, and you could argue that the time has come and gone for both Apple and Microsoft.
Apple has many good months and years ahead. We will have to wait and see if they can regain the golden era of Jobs and his new iMacs, iPods, and iPhones.