QQ vs 66

When QQ and 66 get all in before the flop, QQ wins 80.6% of the time and 66 takes 19.4%. Broken down, QQ wins outright 80.4%, chops 0.3% and loses 19.2% — a margin of 61.2 points. Pair over pair — the higher pair is roughly an 80/20 favourite.

The same matchup shifts depending on how the suits overlap. With no shared suit the number is 79.8% (for example Qs Qh against 6d 6c); with both suits shared it is 81.3% (Qs Qh against 6s 6h). That is a spread of 1.51 points across the 36 distinct card combinations, and it comes almost entirely from whether the two hands are fighting over the same flush.

Add a third player holding a random hand and the split becomes QQ 65.8%, 66 17.7%, random 16.5%. QQ gives up 14.8 points and 66 gives up 1.8, so the favourite loses more than the underdog does. Extra players always eat into the leader's share faster than into anyone else's.

Taken on their own, QQ is worth 79.9% against a random hand (rank 3 of 169) and 66 is worth 63.3% (rank 17). The gap between them in the ranking is only 16.6 points, yet head to head the gap is 61.2 points — a reminder that a ranking table and a direct matchup are two different questions.

Framed as a run of one hundred identical all-ins, QQ scoops roughly 80 pots, splits about one, and loses the remaining 19. Against eight random opponents rather than this one specific hand, QQ would be down to 24.5% and 66 to 13.7%, so the shape of this particular confrontation matters far more than either hand's standing in the overall ranking.

From 66's side, 19.4% is the break-even point for calling an all-in at 4.15:1 pot odds. Put another way, the call is profitable as long as the amount you have to put in is less than 19.4% of the pot you are playing for. QQ holds the other 80.6% of that same pot.

Two caveats keep this figure honest. First, it is showdown equity across all 36 card combinations with five board cards still to come — there is no fold equity in it, so the value of shoving in practice is usually higher than the raw percentage suggests. Second, it assumes 66 really does hold exactly 66; against the wider range a player would actually get all in with, QQ's 80.6% moves. Use the individual pages for QQ and 66 to see how each of them fares against all 168 other holdings before treating this single pairing as the whole picture.