Oleo said:Regarding Dooku's reaction to having both hands cut off vs. Luke's reaction in ESB: I would imagine that a screaming Dooku in that scene might have pushed the film into "R" rating territory.
Dooku was shocked that a Jedi would do something so cruel. He didn't have time to scream in pain because his mind was reeling from the reality of the fact of what just happened. And then his mind ended up on the floor.