Ford made the first mass-produced car but it doesn't mean they lead the way NOW with automobile mass production.

Apple computers and Windows OSs are both important just for different reasons. But if I was forced to choose, then I would say Bill Gates did the most.

I say that because Windows, regardless of what you think of it, was revolutionary in bringing computing to the masses. There were (are) problems with Windows that force people to be more security conscious, not a bad thing. Windows help to indirectly create a new market in Linux (indirectly simply because people wanted something else!).

So whether he gets the title for the right or wrong reasons, Bill Gates contribution, in my opinion outweighs Steve Jobs.