[tilto]

Another thing to consider (aside from post flop skill of the player) is the situation in pre-flop. For example, a good player will take position, raising, and number of people in the pot into account when they decide whether or not to play a hand. As I recall, the PokerRoom stats do separate based on position, but not based on other "hand situations." For example, playing 89s against an UTG raise with few other players in the pot is probably not profitable, and something like this might be making the EV stat go south.