It's worth noting that the NY Times sometimes revises their headlines. I don't know whether that's happened in this case, but it's a possibility given the NYTimes tweet contained the HN title: https://twitter.com/nytimes/status/494878654934302720
Alternative titles I believe are briefly A/B tested for click through rates when published - it's a standard procedure at NYT and other news sites these days. Plus title 'correction' could have been made by the editors already after it was out.
'Dynamic titling' especially of NYT submissions is becoming more common. For various reasons, some are business and some are editorial/political. The 'paper of record' is no more.
