So, basically if you play matchmaking every once in a while, thus increasing Sigma, you have a chance to earn more points, which is a little ironic, but if you lose battles instead of winning them, you'll decrease your points faster. If you play solidly, on the other hand, it will take longer to earn points, but it will also take longer to lose them, so in the end it depends on you; if your impatient you'll probably do the first thing I mentioned, if it's vice versa, well then vice versa. [Edited on 06.15.2010 2:50 PM PDT]