Interesting question for you all

Now I don't know the exact odds for both of these situations (as far as how often they happen) but I know what my experiences have shown me, at least up until this past month anyway.

I don't know whether AA vs KK (or a similar situation) or AA vs AK. I know up until this past month (which I seem to be on the wrong end of a lot of AA vs AK's) I have seen a lot more AA vs KK deals than I have AA vs AK. What are your observations on this?

Well you have 2 Aces and 4 Kings left in the deck assuming someone has AA, so the probability of any given other player being dealt one out of 4 kings and one out of the other 3 kings is obviously greater than the probability of him being dealt one out of 4 kings and one out of 2 remaining aces.

Too lazy/tired to calculate exact odds though.

Edit: It's also possible people are laying down AK to big preflop reraises - did that myself yesterday as I had a deep stack, another deep stack pushed and I didn't feel like risking the tourney on a coinflip or worse (I put him on TT-AA or another AK). If I'd had KK I'd have instacalled as I'm ahead of everything in his range barring AA, and if he has AA you just put it down to bad luck and move on. Remember AK isn't invincible - it's just a good drawing hand...