I've gotten some of my own writing to the front page of HN. Titling things well is hard and very important, but the content also needs to be good.
For some quick and dirty data:
I used to track pieces of mine that made the front page. I've had several, maybe as many as a dozen, that got at least 10k page views.
My best piece got over 50k page views the first 24 hours. That was in January of this year. It took me about two weeks to write it.
It wasn't content marketing. I'm a blogger. It made me no money whatsoever.
In a nutshell: Take any write-ups about "How to get X amount of traffic/sales/whatever from HN!" with a grain of salt.