While Wozniak was the technical wizard at Apple, I don't think he had a real vision for Apple's products. Jobs had the vision of what Apple products had to be about:

- hardware internals: http://folklore.org/StoryView.py?project=Macintosh&story...

- hardware externals: http://folklore.org/StoryView.py?project=Macintosh&story...

- user interface: http://folklore.org/StoryView.py?project=Macintosh&story...

I believe if only Woz was Apple, it likely would have been an hardware manufacturer like so many back in those days. Steve made Apple unique.