(2) The article in question is a feature article in the NYT Sunday magazine which is where they put the long in-depth articles which took months to investigate. These are meant to be Pulitzer Prize level pieces that will get people talking and make a big splash in the news cycle. This explains both the length and the title. There is NO WAY the NYT Sunday Magazine is going to lead with a sensationalist headline like “How Target Figured Out A Teen Girl Was Pregnant Before Her Father Did.“ That smacks of The National Enquirer or something. The title they actually used (“How Companies Learn Your Secrets“) is not THAT bad either - it got me to click on it when I saw it.
(3) Most importantly, I don't see how Facebook Likes can be the sole metric of an article's "success." This weeks NYT Sunday Magazine is just officially coming out today. This is a front page article. Lots of people are going to be reading,talking and emailing it all week. And when they do they are going to send the link to the source and NYT will get the credit.
(4) Lastly, - no evidence is given that the TITLE was the SOLE reason why the Forbes post went viral. It is an interesting topic and the Forbes blogger adequately summarized it, making the post very "shareable." The promotion and SEO strategies of Forbes may also have helped.
So in summary the Forbes blog and the NYT magazine are very different types of publications and it looks like they both succeeded in what they were trying to do.