there are a few draws he can showup with. You have the As though and that actually matters a lot here. Also its worth noting that you have backdoor flush and straight draws. That adds a decent amount to your equity actually.

Also note that its pretty tough for him to have KK. This is basically JJ/88, a draw, or a terribly played AK, MAYYYBE KJ (you are 30% to beat KJ though).