[crockpot]

i believe the difference has to do with straight flushes. between hands 1 and 2, hand 2 is more likely to hit a straight flush against a full house (or better) than in hand 1, because the ace of hearts makes it easy for the aces to hit a full. the ace of spades, meanwhile, cannot do the same in hand 1 because it is in the aces' hand.

in hand 3, the fact that the nine of diamonds is live doubles the number of straight flushes you can hit. this still seems like a pretty big difference just due to that, but it's better than anything else i can think of. try running the simulation again but swapping the suits of the 6h and 9d for hand 3, and see if you get the same result.

of course, it is naturally better to have your suited cards be in a suit where the ace is still in the deck, so that if that ace comes on board, you have a better chance to make a flush and draw out on the trips. so hand 1 is the worst here for a reason.