Almost every time I read a story about the two Steves, it feels like their relationship was unbalanced. Woz always comes out as the brilliant engineer who gets played by management to lay golden eggs for nearly free.
I haven't read iWoz, and I doubt Woz himself feels this way about it, but these stories just have a way of coming across that way.
I think that's part of Woz's mystique. He's the brilliant hacker who just likes solving problems. It fits in with the story that Woz originally offered the Apple 1 to Hewlett Packard as he thought they should have first crack at it.... that's just who he is.
Woz is worth $100 million, as far as I know all due to his role in Apple, despite not having done any work for the company in about 25 years. I'd say that's pretty far from "nearly free". He may well have gotten shafted a few times, but the end result seems to have come out well.
I haven't read iWoz, and I doubt Woz himself feels this way about it, but these stories just have a way of coming across that way.