You are right to an extent. However, affirmative action in America does not mean an equal amount of blacks MUST be employed in a particular organization. It just means an organization MUST EMPLOY black people, not necessarily an equal number.
I totally agree with you that each state must be represented in any government recruitment, but to make it equal across the board is not a true reflection of the educational levels in each state. I would rather a system based on a States academic performance, this will ensure more competent people are employed to represent the organization. You cannot give sokoto an equal number of slots as you would Ebonyi, when it is clear that Ebonyi has a much higher number of graduates each year. (this is just an example, I am not criticising sokoto as a state)