Results with uncommitted going to Obama: 17463927 vs 17407282, around a 60k lead or so for him. Given the demographics of Michigan, and the polling that I saw, the +15 was close. In Florida, I think her vote might have actually been understated a bit if they were both campaigning there, again given the demographics and polling info leading up to the election. In both cases, more people would have shown out to vote, making this count likely closer, not that it matters much either way.
Honestly, I think the entire primary system should be scrapped and we should go back to the original system of picking the candidates at conventions, as its largest effect so far has been to move the candidates further away from the middle (and where most American's lie)