I tried it when it was in alpha to see what it did. The few games I tested with their settings (I was using lower settings than them that I had tweaked when playing the game) sometimes resulted in fps below 30. Planet side 2 needs to be tweaked for that 100v100 battle, because when your in it you need more than a slide show to stay alive.
So overall I wasn't impressed, it was choosing settings that resulted in a bad experience. They had done a worse job of optimising than I had and I try to turn as little down as possible and focus on the stuff that usually causes problems, I don't fully get into which setting is bad in a game I might just drop a whole preset and tweak from there lighting or AA.
i7 3930k @4.4, 2xMSI GTX 680, 16 4x4 GB Corsair 2133 RAM, Crucial m4 500GBXonar D2X. All custom watercooled by 2x MCR 320 and 1 MCR 480
Zowie Evo CL EC2, Corsair K70, Benq XL2411T