Some people do not tell the truth in their internet profiles. That's what the different sections are for. So you can, for example, play a 30 y o creep who like to pretend that he's an underage girl on the internet, to give a very extreme example.
So basically, the Character Account is what the character claims to be online, while the Character is who they really are.
EDIT: Whoops, used the wrong account for replying WHELP