AKs vs AKo

When AKs and AKo get all in before the flop, AKs wins 52.4% of the time and AKo takes 47.6%. Broken down, AKs wins outright 7.1%, chops 90.7% and loses 2.2% — a margin of 4.9 points. Domination — a shared rank turns this into a kicker fight, and kicker fights are lopsided.

The same matchup shifts depending on how the suits overlap. With no shared suit the number is 52.4% (for example As Ks against Ah Kd); with no shared suit it is 52.4% (As Ks against Ah Kd). That is a spread of 0 points across the 24 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 AKs 34.0%, AKo 29.2%, random 36.9%. AKs gives up 18.5 points and AKo gives up 18.4, 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, AKs is worth 67.2% against a random hand (rank 8 of 169) and AKo is worth 65.4% (rank 12). The gap between them in the ranking is only 1.8 points, yet head to head the gap is 4.9 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, AKs scoops roughly 7 pots, splits about 91, and loses the remaining 2. Against eight random opponents rather than this one specific hand, AKs would be down to 22.4% and AKo to 19.1%, so the shape of this particular confrontation matters far more than either hand's standing in the overall ranking.

From AKo's side, 47.6% is the break-even point for calling an all-in at 1.1:1 pot odds. Put another way, the call is profitable as long as the amount you have to put in is less than 47.6% of the pot you are playing for. AKs holds the other 52.4% of that same pot.

Two caveats keep this figure honest. First, it is showdown equity across all 24 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 AKo really does hold exactly AKo; against the wider range a player would actually get all in with, AKs's 52.4% moves. Use the individual pages for AKs and AKo to see how each of them fares against all 168 other holdings before treating this single pairing as the whole picture.