AotC makes plenty of sense and Dooku’s actions are totally understandable.
You can’t be serious. Dooku has no clear motivation or personality. Snoke isn’t a well-developed character, but at least his motivations are clear.
???
Dooku’s personality is “old timey gentleman who is evil”.
Still more than Snoke’s “cackling Palpatine-esque person”.
Dooku’s motivation is the same as Anakin’s, in a way.
“I see you becoming the greatest of all the Jedi, Anakin. Even more powerful than Master Yoda.”
“I will be the most powerful Jedi ever.”
“I’ve become more powerful than any Jedi, even you.”
Snoke’s motivation is “Evil”.