Ha, they're playing mind games with us. Revealing some cogs of their algorithm without the context, thinking it would mean nothing to us. My copy writing is presented to them at a formula close to PI. They're just throwing it back at us (there is a very savvy group in the Netherlands). Even if we understand the algorithm they have a penalty in place to whack us back down when we succeed in sliding down the black hole, flashing lights and alarms probably ring at the plex. This bid was just a way of saying to some in the SEO community -- you now know that we know that you know -- but you still aren't going to rank #1.
Or maybe they were just bored ;)