Heh, I wouldn't fool with pokertableratings much, seems like a crock to me. I'm mainly a SNG player, so only had a few hands of 2NL that they tracked. Check this out:
Hands 368
Net profit $5
34.78 BB/100
Overall D-
It tells me in each category that I'm too aggressive, then it tells me that I need to showdown about 15% more of the time. It's like they haven't realized that you should make people pay to get to the showdown when you have them beat???