Why we win

This post gives a great explanation for why those people winning 3 BB/100 hands still might me making many mistakes...

The people that we play against are so god awful that it doesn't matter much. Even if we make 3 or 4 bad plays an hour, our opponents are making 30 or 40 bad plays.

You are doing things wrong, but you are just much less wrong that your typical opponent. That is the dirty little secret that us poker players don't want to admit. We don't win because we are so good, we win because we play against those who suck.