pre_vs

Вот полный список, из него должно быть все ясно
3B_vs_open_from.EP.total 3 bet % when facing open from EP
3B_vs_open_from.MP.total 3 bet % when facing open from MP
3B_vs_open_from.CO.total 3 bet % when facing open from CO
3B_vs_open_from.BTN.total 3 bet % when facing open from BTN
3B_vs_open_from.SB.total 3 bet % when facing open from SB
3B_vs_open_from.EP.ip 3 bet % when facing open from EP when in position
3B_vs_open_from.MP.ip 3 bet % when facing open from MP when in position
3B_vs_open_from.CO.ip 3 bet % when facing open from CO when in position
3B_vs_open_from.EP.blind 3 bet % when facing open from EP when in the blinds
3B_vs_open_from.MP.blind 3 bet % when facing open from MP when in the blinds
3B_vs_open_from.CO.blind 3 bet % when facing open from CO when in blinds

А чем эти статы отличаются от вкладки 3 бета ???

Берем отсюда
http://faq.holdemmanager.com/questions/95/Stat+Definitions
список статов в ветке 3bet
3-Bet BB is Bet 1, a raise is bet 2, the next raise is bet 3. (3-Bet)
EP 3-Bet Same as 3-Bet, but this is specific to EP
MP 3-Bet Same as 3-Bet, but this is specific to MP
CO 3-Bet Same as 3-Bet, but this is specific to CO
BTN 3-Bet Same as 3-Bet, but this is specific to BTN
SB 3-Bet Same as 3-Bet, but this is specific to SB
BB 3-Bet Same as 3-Bet, but this is specific to BB
Fold to 3-Bet How often a player folds to a 3-Bet
Fold to 3-bet (ip) How often a player folds to a 3-Bet In Position
Fold to 3-bet (op) How often a player folds to a 3-Bet Out of Position
Call 3-Bet How often a player Calls a 3-Bet
Four Bet Player must open the betting action then be the one to 4-bet.
Five Bet How often someone raises a 4-bet
Fold to 4-Bet How often a player folds to a 4-Bet
Four Bet Range Four Bet Range in Holdem Manager 1 is caculated: Preflop Raise x (vs Raise 3bet %)

разница в том, что здесь - именно 3бет "вообще", а там - действия ПРОТИВ рейза из конкретных позиций

Оттуда можно выводить полезный стат. 3бет блайндс против утг и мп чтобы знать как лузово/тайтово человек 3бетит на блайндах против ранней.
А то общий 3бет с ББ может неверную инфу показать из за того что туда будет входить по большей части рестильные ситуации.