Do you really think dry AA/Kx plays this way? 

I agree its a bit ambitious - ran this real quick while I was playing and didn't fully think it over....anyways with Kx/AA removed our equity increases to 53%

OK, I ran a sim for this spot using a pre-made 17% 3bet range based on playability.  It's a little bit looser than his stat, but it is CO v BTN so it seems like a reasonable starting point.  

Flop I gave him a c-bet range of: (TP>, GD>, BWd,2BFD)  That's top pair or better, gutshot or better, backdoor wrap draw, or two backdoor flush draws.  This makes up a 66% c-bet frequency which seems reasonable for K63r. 

On the turn, SPR is going to be 1.4.  Once villain pots, we're going to need ~37% to get it in.  Let's see if we have that. 

So, let's assume he pot/calls turn with a range of: ((2PR>, FD, OE>)-(SET+FD, ST+FD)).  That is, 2 pair or better, any flush draw, any open ender, minus set+fd, st+fd.  I'm making the assumption he uses two sizings in this spot, one being pot with the middling stuff, the other being a smaller bet with hands that have the deck crushed like set+fd, st+fd, or hands that are bet/folding like T987hh. 

Vs that range, we have 47%.

Now let's look and see how our equity changes when villain c-bets the same range on the flop, but only has one sizing on turn, which is pot. 

So, villain c-bets flop with range: (TP>, GD>, BWd,2BFD)

On turn, he pot/call's range: (2PR>, FD, OE>)

Against this range, we've for 44%, so it looks like another clear stack off.

Obviously if we change any assumptions that widen either villains flop c-betting range or turn potting range, that only increases our equity and makes it an easier get in. 

Overall, it seems like a pretty clear get in.

Some reads would be nice.

Think 66% is a serious underestimation of how often people cbet this flop ~~ Not that it's all that relevant, just thought that was a bit of a low estimate.