There is a HUGE difference between ED and Chima. ED was in your face telling you what he thought. He was in the game to get him and his daughter (mostly his daughter at some points) as far in the game as he could. I don't ever remember ED b*tching and complaining about the game screwing him over. Even when Nick got voted out, he took his part of the blame.
Chima will stoop to any level to get ahead, and if that doesn't work she will cry foul and wanna take her ball and go home.
Seriously, who is watching BB because of Chima?