Anakin Skywalker was prophesized to bring the balance to the Force, but one Star Wars theory suggests that Count Dooku believed he was the true Chosen One, not Anakin. The prophecy of the Chosen One is central to the Star Wars prequel trilogy, but it has always had an underlying level of uncertainty.
Dooku knew that recruiting Anakin was part of the plan but he didn't expect to be replaced. Sith aren't known for being selfless and devoted to the cause. If Dooku had suspected that he was going to be replaced (and knowing that being replaced means dead), he'd have no reason to go along with it.
Obi-Wan Kenobi, during his confrontation with Vader on Mustafar, stated that he believed Anakin was indeed the Chosen One, but that his destiny had been altered, and the prophecy left unfulfilled. Anakin fulfills the prophecy by killing Palpatine. Skywalker's sacrifice brings balance and redemption.
In legends, Dooku actually explains why he hates Anakin: He could feel Yoda's touch still lingering on the edges like a distant echo. Vividly his mind went back to their last meeting, on Geonosis: swords drawn at last, and finally equal.
The Chosen One was revealed to be Anakin Skywalker, who conceived by the Force itself via the mystical one-celled organisms called midi-chlorians completely without outside influence.
Several Jedi believed Anakin Skywalker would bring balance to the Force, but Count Dooku may have seen himself as the Chosen One instead. Anakin Skywalker was prophesized to bring the balance to the Force, but one Star Wars theory suggests that Count Dooku believed he was the true Chosen One, not Anakin.
Prior to his defeat on Mustafar, Anakin Skywalker was the single most powerful Force user in the known galaxy. In a direct brute Force contest, Anakin Skywalker would sweep the floor with anyone. The ability to use the Force is a powerful edge against any foe, but it isn't everything.
Anakin regrets this decision, and Palpatine reasons with him saying that Dooku was too dangerous.
Anakin and Obi-Wan board Grievous' ship, the Invisible Hand, and confront Dooku, who knocks Obi-Wan unconscious, leaving Anakin to face the Sith Lord alone. Anakin gives in to his hatred of Dooku and uses his anger to overpower him, severing both of Dooku's hands and leaving him helpless.
Palpatine knew that the only way for Anakin to defeat Dooku was by tapping into the dark side of the Force. If Anakin did this he would surpass Dooku and carry out the rule of two, also Dooku was much older than his master Palpatine and didn't have the potential to defeat him and become the Sith master but Anankin did.
The maverick Jedi Master Qui-Gon Jinn comes before the Jedi High Council, which Windu is a member of, and offers to train Anakin Skywalker, believing that the boy is the Chosen One of Jedi prophecy. Windu and the other Council members decline, deeming Anakin too old and full of fear.
During the Clone Wars, Yoda began to hear the voice of the long-dead Jedi Master Qui-Gon Jinn. He decided that the voice was real, and let the Force guide him to the swamp world of Dagobah, whose purity made it strong with the Force.
Not only did the Dark Lord deem the project a failure, his efforts ultimately backfired and caused the midi-chlorians to create Anakin Skywalker, the prophesied Chosen One of Jedi legend who was destined to restore balance to the Force by destroying the Sith.
Bottom line, Dooku never considered himself a Sith. And he wasn't; he was a man looking to change the galaxy in a way the Jedi were unwilling to try. And that is why he joined the Sith and became Darth Sidious' apprentice, Darth Tyrannus.
Not to mention the main reason anakin defeated dooku was because he cheated. Instead of finding a way to catch dooku off guard, which he most likely wouldn't be able to do, he grabs his hands and severes them. Had he not have done this and if dooku was trying his best, I think he would have beat anakin.
After Count Dooku severed the right arm of Anakin Skywalker in the opening battle of the Clone War, a mechno-arm was grafted to what was left. Luke Skywalker had much of one grafted to his wrist after Darth Vader severed his hand at Cloud City.
The attempt was carried out by Zam Wesell, a partner of bounty hunter Jango Fett who himself following orders from Count Dooku, leader of the Confederacy of Independent Systems so that it could gain the backing of Nute Gunray and the Trade Federation under the condition that Amidala was killed.
His former colleagues in the Jedi Order saw Dooku as misguided but a man of principles, and refused to believe he could be an advocate of violence and war. They were wrong; Dooku had sworn allegiance to the Sith Lord Darth Sidious, taking the name Darth Tyranus.
When Dooku was still with the Jedi Order, he was considered to be one of the greatest (if not the greatest) lightsaber duelists of his generation. Anakin really wasn't as good of a duelist as many people hype him up to be.
This is confirmed later in the movie when Obi-Wan informs Padme that Anakin killed them. Both are torn apart with hurt and confusion, trying to make sense of something so terrible.
Giving in to his feelings, Anakin cuts off Mace Windu's hand, giving Palpatine the opportunity to kill him. Anakin regrets this almost instantly, but the thought of Padme was stronger than his remorse This is the moment Anakin officially became Darth Vader and led to serious issues in the Skywalker Saga.
Obi-Wan knew of Anakin's more militant ways in war, but he always trusted Anakin to do what is right. He gave Anakin actually he benefit of the doubt that he killed Dooku honourably. He certainly did know though.
During the early days of the Clone Wars, Skywalker served as a Jedi General in the Grand Army of the Republic, commanding the clone troopers of the elite 501st Legion against the Confederacy of Independent Systems. After receiving his knighthood, Skywalker oversaw the Jedi training of his own apprentice, Ahsoka Tano.
The highest known midi-chlorian count—over 20,000 per cell—belonged to the Jedi Anakin Skywalker, who was believed to have been conceived by the midi-chlorians.