This is selection bias. Aces tend to lose more often than you'd expect if you go all the way to showdown, because you're only 2 outs to improve and most opponents won't risk big bets on top pair, which is the best hand aces are likely to beat. Thus the only hands you're actually likely to SEE at showdown are the ones that have been improving or the ones you got all-in preflop.

You can't just count wins at showdown. You have to add in all the times your opponents fold preflop or on the flop or turn to get to 70%. Actually, that number will be a little off because your opponents will often fold hands that would have drawn out on you, but there you are.

Also consider that AA is 70% heads up, but against 3 or 4 opponents, it's not likely to win. It's the best hand at the table...you wouldn't pick another...but it's not likely to win because NO ONE is likely to win once there are several hands at play. Everyone has a small chance and you have a slightly bigger chance.

You can't count a multiway pot as a loser for purposes of getting to 70%. You have to count your heads up result against each player at the table. You might lose to one player but be ahead of the other two, which counts as one loss and two wins for statistical calculation. But, unfortunately, there's no consolation prize for having the second best hand.

Also, how big is your sample size? If you've only caught aces 10 times, I wouldn't be surprised if you lost 8 of those hands, especially if the loses happened on the river.

And "this one time I saw someone call my aces with 72 and the flop came 772" is not evidence of anything. I had a ridiculous 4-flush suck out with kings against someone's aces last week. I wasn't in collusion with anyone. He just got unlucky.

Every pattern of cards is just as likely as every other pattern of cards. MOST patterns of cards favor AA, but most patterns of cards also favor folding 72 before anyone sees what you have. It's only when you hit that folks see it.

It's a big poker lesson: do not fall in love with AA or KK. Get as big a commitment as you can as early as you can because the longer other players are choosing to stay in instead of folding, the less likely it is that you are ahead.

Another big poker lesson: do not favor the conspiracy theory for why you're losing. That won't help you win. If you are truly convinced that the game is rigged, stop playing, because there are only two possibilities:

a) you are right, in which case, why be a sucker?
b) you are wrong, in which case you have accepted an erroneous explanation for the outcome of poker hands and thus immunized yourself from improving your game

"AA is What about 70%"

It depends upon how you define the problem. It's 85% against one random hand. It's around 70% against two random hands, about 56% against four random hands, and about 33% against nine random hands. In other words, if you're in a 3-6 game where everybody sees every flop, your aces lose about two thirds of the time.

Those are showdown equities, of course.