[ahollenbach]

Check out 5.3.3 and 5.3.7
In summation, they state that qualification ranking is first and foremost obtained via a 2 point win, 1 point tie, and 0 point loss. The team with the highest number of points will be seeded first.
If there is a tie (e.g. two times have 4 wins, 2 ties and 0 losses, totaling 10 qualification points), then it goes to Ranking Score, which is what you are talking about. So it is helpful to avoid the other alliance, to an extent.