Look at the KhanAcademy page on it, it's really brief. The gist of it is to have 1 paragraph arguing your side, 1 paragraph arguing against the other side.
If you switch Powerscore for Khanacademy/youtube, this is also me. There are multiple threads on people tanking this test already. Did they deliberately make it harder? I guess I will be making the same thread on the 15th...