Both 3B and flatting are fine, versus most players I prefer playing a linear 3B-range SB-MP.

Good flop to range-cbet small, in my opinion.

I saw in villain's HUD he has an extremely low AF. So even though I feel I should range-check normally OTT versus most players, since it gives villain a huge range advantage, exploitatively I strongly prefer betting versus this specific player type.

OTR I was planning on XF'ing if he shipped. The river completes KQs, which is terrible for me. I think the king will cause him to pretty much fold all worse hands if I bet, so valuebetting isn't an option for me. And he is passive in a way where I just don't see him showing up with enough combo's to call down. When he decided to bet so small though, I looked him up for the following reasons:
- His 'thin' VB (AQ/QJs) become relatively more likely when betting small, whereas his 'strong' VB (KQ/88/66) become less likely. Were he to push AI I'm folding rather quickly, because I only split sometimes against his AQ hands, incidentally beat a bluf like JTs, but the vast majority of the time lose to his strong valuebets. I actually think the call versus this betsize is still quite close against this player.