Jager,

I only play at 25Nl but it seems to me you're too aggressive. You never limp, especially from ep. I believe this causes you to play too many big pots OOP. You might consider reading the new book by Ed MIller. (Can't remember title but something about playing Professional Poker.)

You also mention you feel that W$WSF is your most important stat. I've never seen anything on this, but I think you would find that players with a high won $at SD will have a greater BB/1oo rate than those with a high won$wSF. Why is this? Because a high W$WSF % will likely mean winning smaller pots with aggression by getting your opponent to fold and a high W$SD % will mean that you are winning bigger $ pots because they've had more betting. Obviouly a high % of both would be ideal but you might think about your W$SD rate. I believe a good percentage here is around 56-58.

I know this "advice " is somewhat unconventional but look up Cocco Bill's stats. He plays passively and is crushing the games he plays.