[Zoelef]

You have As Ad.
You're worried about AK and KK.

There are six ways to get KK - KsKd, KsKh, KsKc, KdKh, KdKc, & KhKc.
There are eight remaining ways to get AK - Ac(any king) and Ah(any king)

So 4/7 of the time he has AK, and 3/7 of the time he has KK.

I'm not sure how that applies to this hand but once he 3-bets the turn I call down. Also, bet the flop!