That's odd - I researched CI's for years, spoke to people who had been implanted, talked to my surgeon, audiologists and not ONE said that with a CI, hearing was 100%. There are so many different variables to be taken into consideration - whether somebody is latened deaf, how much they are willing to work with the CI (some people have to learn how to listen and reconize speech with them,) etc.
I've never seen anybody here with a CI or a CI-implanted child claim that their hearing was 100% after an implant.
To be honest - the only people who I have seen say that CI's completely restore hearing are those who are against implants, and claim that others say that, and use it as an arguement against CI's. 
