Importance of PT stats

[BlackRain]

This is just a general question about VPIP and PFR. I notice that most people on here say that a healthy VPIP is around 20 and PFR at around 8-10 I believe. Whether limit, or NL, my stats have always hovered around 18/6. I guess this would make me Weak/Tight?

I guess my question is, am I missing out on a lot of extra profit by playing weaker PF than is generally thought to be ideal? Or can a player with these stats also maximize winnings with correct post flop play?

I will give a few examples of hands which I do not raise PF unless I am blind stealing. I assume 8-10% PFR players are raising PF with these hands.

88, 99, TT, KQo, AJo and sometimes AQo

Concerning post flop, I am also usually fairly quick to bail if my TT and below do not flop a set. Factors included in the decision to fold include how many people in the pot and how many overcards. But in general, I usually don't call down or try to make a move, with TT and below without a set.

I was hoping to get some comments on this kind of play and if you think I am losing money with this style. Thanks.