No info on Villain (2 hands on him)

I called the flop because I figured that because he called the 3bet from CO he was likely to defend wider thus having a wider range on all streets.

Given that assumption and once I called the flop, I figured calling the turn was mandatory.

I thought that if he checked the river it meant that I would lose to a K or even a T, but when he barreled for the third time on such a dry board, I felt like he was very polarized between value hands and bluffs.

he didn't have that many logical value hands that wanted 3 streets of value in his range (10-10, K-T, 55, 65, 56, 76, 86) because I think he checks back his KQ-KJ type hands OTR and when he bets half pot on the river, it seems unlikely he has a monster either.

So I called and felt good about him having A-3o (WTF) but after I was really doubting my call and reasoning.

Was I lucky or did my play make any sense ? Is that EV+ to call down light here ?