Struggling at 200NL but beating 100 and 400NL with PT Stats

[Dave_K]

I am really having a hard time trying to understand how my winrate is so much lower at 200NL than 100NL and 400NL. I have good table selection and am playing with players that are pretty much the same as the other limits I play and yet I am doing significantly worse at 200NL. Could it possibly just be variance? Seems like its over too many hands for it to be this drastic over this many hands. Has anyone had something similar happen? I have really tried to figure out what the problem is but I cant.

Any help would be appreciated. I cant be the only person this has happened to. Should I just quit playing 200NL completely? This is on Full Tilt for what its worth.

PS. Yes I am a nit, blah blah.