Xbox would probably have had a much harder time if Sony hadn't initially done so poorly with the PS3. The success of the 360 probably helped the next gen as well, and the success of that gen probably helped this one too. I guess it also helps that Microsoft did some decent moves back in the way. Along the way, they started losing more and more of those moves.
I guess there's more to the story, but I think that's probably much of it already.







