I am playing a lot of heads up. Everytime I got a premium card to shove preflop, like a pair, or AK, my opponent has something good to answer like a QQ premium pair, or AQ.
The thing is I dont put into consideration the times that I have Aces or Kings and get no action because of the folds or when I win. And that is probably happening to your case too.
When someone 4-bet your already big bet should tell you something. And I was speaking about heads up, where is just one player, in cash games there are more players=more chances to also hold a premium pair. In your case, Kings to run into Aces in a full table, I've read somewhere its roughly 1 to 20 times. So, if it happens more than this, my only suggestion is to join the Rigged Mega Thread:icon_rabb:icon_rabb