I went through the blog (the last 3 pages of articles) they all have quite consistent share ratios (Facebook likes are almost always 6 - 7x the number of Tweets

I went through the blog (the last 3 pages of articles) they all have quite consistent share ratios (Facebook likes are almost always 6 - 7x the number of Tweets) and the number of likes seems to hover around 4k for the "average" post (so it's plausible they have a regular audience liking most posts). Every blog post on their site follows the formula talked about in this blog post (explaining "why" it went viral) so why haven't these posts gone viral?