The use of his Vapaad style would have given him an automatic advantage while fighting against any dark side user. So, while Star Wars fans never saw a knock-down, drag-out fight between these two icons, it seems likely that Windu would've bested the former Jedi.
Dooku defeated Obi-Wan, but Anakin in turn disarmed him, severing his hands and holding his sabers at the count's neck. To Dooku's shock, his secret master then told Anakin to kill him. Sidious had indeed betrayed Dooku, and a flick of Skywalker's wrists ended the count's life.
Count Dooku didn't like the Jedi Order, but he particularly disliked Master Windu. Disney+'s Star Wars: Tales of the Jedi explains why. The following contains spoilers from Star Wars: Tales of the Jedi Season 1, streaming now on Disney+.
7 Why Rey Couldn't Win: Dooku's Skills Far Outshine Rey's
Rey was able to triumph over a lot of foes through sheer pluckiness and a good mixture of luck and sheer Force power. That won't help her against Dooku.
Overall, Dooku was far more equipped to become a Sith Master than Maul was. Had he managed to overthrow Palpatine, Dooku would have been able to use his position, combat abilities, and dark side Force powers to take his place on the throne Palpatine had carved.
Dooku's vision for the Empire was superior to Palpatine's, as he aimed to transform the Jedi Order into an unstoppable Sith Army. His talents as a Force wielder, though outclassed by Palpatine and Yoda were also top tier, as nearly all Jedi were unable to withstand him.
At the beginning of the Clone Wars, Dooku was better but at the end of the clone wars, Windu was a better duelist, martial artist and Jedi. Windu fought the minions of Talzin with his bare hands. He held his own against Maul and had Mandalorians not targetted Aayla then Windu would have killed or captured Maul.
Dooku and Yoda have had a long history. Master Yoda trained him, but Dooku also trained Qui-Gon Jinn, Obi-Wan's master. The lineage of master and apprentice runs deep, and it was Dooku's fall to the Dark Side that hit Yoda very hard.
Mace does have some advantages, for example shatterpoint and Vaapad. However, even with these advantages Windu would be defeated by Vader. The Dark Lord is one of the best duelists in canon, slightly more superior than Palpatine to the point that even Palpatine indicated Vader's strength and power.
Only three Jedi/Sith in Windu's lifetime ever surpassed him, (Darth Sidious, Master Yoda, and Anakin Skywalker) and all three just so happened to be candidates for “most powerful Force-User in the Republics' 25,000 year history” at various times.
Yes. This is going to be unpopular, however, it's fairly clear from various sources, including Lucas himself, that Palpatine did let Mace Windu win. Lucas himself noted during hos commentary on the film But this part where he, he pretends to lose his power and be weak was something I added later.
If the two spared as Jedi, Dooku would probably win the match because he was the better all-around duelist. But if this issue's fight had continued with Windu as a Sith, Windu would have been able to turn the tables.
No. Dooku did actually beat Windu in a lightsaber duel back when he was still a Jedi. In fact, the only two Jedi in the entire Order to ever beat Windu were Dooku and Yoda.
Darth Maul was Darth Sidious' apprentice and the final antagonist of 1999's The Phantom Menace. Given that he killed Qui-Gonn and nearly overpowered Obi-Wan on Naboo, he is an exceptionally gifted lightsaber duelist. After Maul returned in The Clone Wars, he became a dangerous wildcard.
The two were able to free Maul after he had been interrogated by the Sith Lord Count Dooku, and together the three rendezvoused with more Death Watch forces on the moon of Zanbar. Maul took command of his forces once again, and assured them that the war they had longed for was at hand.
Sidious revealed to Maul that he did not intend to kill his former apprentice, as he still had use for Maul; it was Sidious' hope that Maul would lead the Sith to Mother Talzin, Maul's mother and the leader of the Nightsisters, so she could be eliminated as a potential threat to the eventual Sith rule of the galaxy.
By Revenge of the Sith, Anakin was considered equal or inferior only to Yoda. Once he became Darth Vader, Anakin had long become superior to Dooku and Mace Windu. He exceeded their power while still living as Anakin Skywalker, and greatly exceeded their power later in life, both in the force and in lightsaber combat.
Dooku argued that having a well-respected Jedi such as Obi-Wan on their side would bring legitimacy to their cause, and wash away any doubts the integrity of this New Order. Much to Dooku's dismay, Sidious dismissed the idea, knowing that Obi-Wan was too strong in his convictions to be swayed to the dark side.
