re: Poker & How much should I rely on table stats?
Average players to the flop is probably a better stat as it shows how loose/tight the play is. Then you have to look at the players individually and decide if they are exploitable. Do you have a calling station at the table, do you have a maniac? Do you know from previous play that you have loose passive player to your left that will call pre then fold if he doesn't hit post-flop.
It is taking advantage of individuals that makes you money, not tables, but a high players to flop percentage generally shows those loose pre-flop players that will play worse hands than you.