By all historical accounts, Wozniak was much more instrumental in delivering the goods. It was his designs that made Apple what it was during its celebrated heyday. The only thing they seemed to later gain from the prodigal CEO, Jobs, was style dictation and marketing.
I think the idea that Jobs could tell what people "didn't want" was perhaps his biggest downfall. He was clearly a very temperamental leader for Apple, and subscribed to a very odd notion of form over function. It shows through very clearly in everything he had a hand in. It made for pretty cases, but at the expensive of bits and pieces of expected usability: see, one-button mouse. The idea that he wanted to control everything through walled gardens like the AppStore should scare the pants off of any well-informed consumer living outside of the reality distortion field.