[detruncate]

I think the Y/N has to do with whether the pf stats are included in the aggression numbers. There was some discussion earlier in this thread about the relative merits of including pf.

You'll find different versions of the rating system floating around (check the PT forum for starters). It's easy enough to try a few and see which one gives you the most helpful results if you're not sure you like the way this one is set up. Of you could always modify it yourself. It's not hard to understand the underlying logic, especially as Bison was kind enough to walk everyone through it in his post.