The winners of that competition demonstrate a weakness in Google’s algorithm within low volume search queries that are tied to a low population geographic area.

That weakness tied to a local search queries in a low population area can be exploited to create an SEO case study that appears to show positive results in terms of how many search queries a site begins to rank for.

There are two kinds of successes that are variously claimed in SEO case studies published on Facebook:

How Did a Latin Language Site Rank for English Keywords?

There were a lot of things going on to power that ranking. But the chief reason is the low search volume for that search phrase.