I don't like baseball, but I just thought of this analogy:
If Kerry gets the nomination, it'll be like the Yankees/Marlins world series all over again. It'll be a predictable, dull race which many people will tune out.
On the other hand, a Dean vs. Bush race would be like the Red Sox vs. Cubs series that everyone hoped for -- a real match.
Oh well, it's looking less and less likely now. pity.