I read the letter. The publisher admits to no such thing. The almost verbatim quote was ‘We believe we covered both candidates fairly.’
This headline is misleading. The only thing they are admitting to is that their readers are stupid, and to cater to stupid people, they have to start acting impartially even though they have no intention of doing so.
Read ALL OF the articles written today, not just this one. i spent a couple of hours reading them this afternoon:
http://nypost.com/2016/11/11/new-york-times-we-blew-it-on-trump/
NY Times “Blew It”.