Right. Consistent top third finishes are a good sign for your skill level vs your competition, but you could be min-cashing half your tournamnets and still be a losing player, so what's that worth? Tracking profits is the only way to tell if you're a successful tournament player.
If you're just a recreational player, and you're breaking even and having fun doing it - that's great; you're getting free entertainment.
Good news is that if you're good enough to cash consistently, you can probably learn to tweak your style to make deeper, more profitable runs.