Percentage of hands won

[Guthrie]

Some sites show the percentage, or number, of hands won. While bored and folding I sometimes look at this and wonder if I should be winning 10% of the time. Sometimes I do, and sometimes I don't, and there doesn't seem to be a lot of difference in the amount won.

If no one ever folded, obviously 10% (in a 10-handed game) would be the norm. As we all know, however, the goal is to win money, not pots, so would a good player win fewer than 10% of the pots since he folds junk hands, while winning more money? And would a bad player win more than 10% of the pots by sucking out with his junk hands, or picking up low-money pots when good players fold?