Who Says we don�t know
I am sure that there are many people who know this.
Without the Ace Side Count, I computed the Betting Correlation to be 92.47%
With the Ace Side Count, (Ace values at -2) I get 98.3%
Now you should understand that Betting Correlation does depend on the EoRs, which in turns depends on the rules of the game. It won�t vary that much from game to game, but here will be some variation.
According to my notes, the EoRs that I used were for Strip Shoe games: 6 decks, S17, DAS, LS, RSA,