LogFAQs > #962990086

Dooku feels like somebody who could legitimately have been a threat to palpatine. Which is I assume why palpatine effectively had him assassinated. Maul on the other hand seems like a strong fighter but also the kind of lackey that palpatine would deploy because he knows Maul couldn't threaten his rule.

So just going by that, I would think that dooku would win in a real fight. I'm sure in the expanded universe books they had some sort of ridiculous battle where they threw planets at each other while waist deep in lava or something, though, that can more definitively answer the question.