A lot of the prequel fights were already foregone conclusions though, so a lack of tension is pretty much expected. Obi-Wan's not gonna die in the first, second or third films. Anakin's not going to beat Obi-Wan, and Yoda's not going to beat Sidious in the third film. However, because Anakin needs to lose to Obi-Wan, that means Dooku's not going to beat Anakin at the beginning of the third film.
In the end, if you don't have that tension, then "looks cook" and choreography are all you got. And that's all I need, personally!