re: Poker & Is "tight" really "right"?
Since PokerTracker tracks specifically preflop patterns, the "tight" that you're referring to is almost certainly preflop hand selection. I realize this wasn't your question, but there are a couple of key points I need to make (for those keeping score, I've had a few beers, again):
1. You win money by making fewer and/or less serious mistakes than your opponents.
2. Tight is a playstyle that causes you to make fewer and/or less serious mistakes.
3. Aggressive is a playstyle that causes your opponents to make more and/or more serious mistakes.
4. Any hand statistically has a decent chance of winning, preflop.
When you're looking at the rocks, you're looking at players who are (presuming you're using the default settings for PT) very tight preflop and not very aggressive. The fact that they don't make many mistakes preflop doesn't mean that they don't make them later on.
... and non-aggressive players don't induce mistakes from their opponents, so their earnings go down.
The mistake that a loose player makes preflop (someone who, let's say, limps in early position with K9) is nowhere near as bad as the player who calls a bet and a raise on a fourflush river with aces up. Preflop is where the small - but many - mistakes are. In a loose game against poor opponents, preflop starts to matter a lot less, though, because the implied odds
will go up.
Furthermore, while on topic about why your numbers may be skewed, the absolutely most profitable style of play is the maniac - when he hits his cards. If you're sorting for "most profitable" in your PT database, you're likely to find the players who have gone on an amazing hotstreak while simultaneously getting lots of actions. The only players who get really wild action with their monster hands are the maniacs, because people don't trust them.
Tight and aggressive are words, and words are subjectively interpretted. When someone says that tight-aggressive is the best style, it's really up for grabs what exactly that means when you're on the button in a full game with 9-9 and someone raised before you.
Which style is the most profitable? The one that exploits your opponents' mistakes. When you're playing a tight and aggressive game, how have you adjusted to the fact that your opponents call too often with weak hands?
You say that only 15 rocks have made money, which doesn't surprise me much. In games where everyone plays most of their hands, the rock is the one getting the worst of it. Mr. Reverse Implied Odds won't be very profitable if he can't be aggressive at the right times, and rocks aren't.
I'm starting to digress. Good time to click "Submit Reply," perhaps.