About precision of calculating win equity. Founded that there are ABSOLUTE precision!
Hero has 2 cards, opp has 2 cards too.
In deck are 48 cards remaining. So it can only be 1 712 304 possible turns.
3 possible results: wi1, win2, draw.
As pokers rule said if draw -> bank splitted.
So for win player got 2 points, for draw 1 point, for loose 0 points.
So maximum point hero can win (100%) = 1712304*2 = 3424608.
And any win probability can be reprezented as N/3424608, whee N is INTEGER.
So there is absolute ultimate precision.
(and only 4 bytes need to store)
Will have it in about a week of calculations