To me, this is a bit of link bait. Unless I'm missing something, this article basically says that the way to get to #2 in the app store without spending any money is to already have a game with more than 1 million users, and place ads on that game promoting the new game.
Yeah I see what you mean. The title was designed to be catchy. Our previous app with a lot of users though was only one of our "bullets". The cross promotion idea is probably something more people can do than they realize.
Also having an app that people are going to download is super important (it sounds obvious, but we think the majority of people don't focus enough on this.)
Am I missing something?