Ah, the old myth about the irreplaceable engineer and the dumb suit. Ask Wozniak about that. I don't think he believes Apple would be without Steve Jobs.
The first Steve was totally irreplaceable, the second Steve was probably arguably the difficult one to be replaceable. Without the first firing, the second Steve would never exist. But then when Apple current ball rolling, he was replaced fine with Tim Cook.
But the point is that Woz was replacable, because he was replaced. Jobs on the other hand was replaced and the company nearly died, he came back and turned it around. Of course it only because a trillion dollar company after Tim Apple took over, which I guess just shows that nobody is irreplacable.
If Steve Jobs couldn't claim Wozniak's work as his own, he wouldn't have landed "his" Atari contract. Who knows where things would have gone after that, but I have a hard time tracing Apple's history of success without, say, the Apple II.
The milieu in which Apple came to fruitition was full of young small microcomputer shops. So it's not like Woz invented the microcomputer for the masses - his contribution was critical for early Apple for sure, but the market had tons of alternatives as well. Without Apple II it's hard to say were Jobs and Wozniak would have turned out. Jobs is such a unique, driven figure that I'm fairly sure he would have created a lasting impression on the market even without Woz. This is not to say Woz was insighnificant - but rather the 1970's Silicon Valley had tons of people with Woz's acumen (not to disparage their achievements) but only few tech luminaries who obviously were not one trick ponies but managed to build their industrial legacy over decades.
