Dooku, barely. Or split. He's nearly emotionless figher, his physicality is underrated. He's more skilled Force user then Windu, and equally skilled duelist.
Windu is also a great fighter, perhaps Dooku's superiority in The force wont be even a facotr.
But Windu is also overated by many. He has nothing which would place him on Yoda's and Sidious' level besides Gillard's statement about his level. But Anakin is also stated to be 9, and Obi-Wan is 8. Dooku is easily 8,5 at least. Or also 9, considering how easily he was dealing with both level 8 fighters (Anakin is 8 at the beggining of that fight) + he has a hype that places him on Windu's level.
Hard to tell, how good Talzin was when she was in Dooku's body. If she was at least as skilled as in her own body, then it might be a suggestion that Dooku iis clear superior to Talzin in sabers (as Sidious pointed, she had nothing of his skill). Windu fought her equally when she was in her weakened state.
Dooku also did better against Grievous, Bulq, Ventress. AotC novel also suggest, that Jango - if no his problems with jetpack - would give Windu a good fight.