The ranking system on the AUSTRAL One shot server gives you maximum points when you cap the flag. Keeping a >1 kill to death ratio and plenty of caps is the way to the top of the leader board. I maintained my position on the number 1 for quite a long time. Just a couple of days before the top players of the month was announced, Major-Ass and Honda went downright crazy and started playing day and night. They played on an empty server too and kept capping until they reached the top.
Now this is what I call true despotism. See for yourself.
From what we know, Ratman is working on an improvised ranking system which we are expecting soon. Let us hope the end product is good enough.