why would kucinich tell his supporters to vote for obama ?! [View All]

I read a couple of reports on how congressman Kucinich told his supporters to make Obama their second choice instead of Clinton during the Ohio round.

Why would Kucinich feel so strongly about Obama winning over Clinton? To me, personally, Obama and Clinton are very similar, they hold pretty interchangeable positions on the main economic, political, and foreign policy issues, and they are very vague about any specific proposals, they rather engage public on an emotional level and create some kind of feel-good atmosphere than get into the meat and potatoes of any specific issue, so they still seem to be very undefined to me, although still better than any of the republicans.

For the record, I support Edwards, for the simple reason that he is the only candidate who officially refuses to take campaign money from major corporations, he is hated by all the right people, and he still has a slim chance to win, so I will continue to support him with my vote and my money. And he was endorsed by Nader, that's a big plus too.

But why would Kucinich endorse Obama over Clinton? Is there something specific about Clinton's policies that made him do that? What makes Hillary worse than Barak in his eyes? Curious minds would like to know.