[raze]

Player read?

Assuming he's a decent player, why would he check the turn behind with a good hand on a fairly draw-heavy board? Not for pot control with AK, because he then shoves a blank river.

What is he putting you on? You peel the flop, so you could have JJ/QQ/AQ and maybe KK/AK, despite no pre-flop 5bet. You check turn AND river, so he might be shoving KK/QQ/JJ in hopes of taking you off AQ or a better pocket pair than his. I think his turn check is too weak to have AK or better on this board.

I'm not too experienced with HU over 100bb deep, but I think I call here and see a pocket pair a lot of the time.