One of the biggest and more interesting difference is that the US government wants to keep these things secret and investigative reporting finds them.
In China, they want this information public because they want people to know that they know and self regulate - Panopticon.
The cynic in me looks at the US as a country controlled by companies while China is a country that controls companies. I don't know if it makes that much of a difference any more now that companies are almost the same size as countries.