Hello, suppose the board runs out something like this:

8h9h2s7hKs

You have around 110-120bb. Villain 3bets you and bets .55*p on the flop, .75*p on the turn and 0.8*p n the river. Suppose he is pretty good player overall 3betting from 17% to 25% with a balanced range.

Is it really better to have 4th nut flush or lower to bluffcatch in this spot than 2nd nut flush since 2nd nut flush blocker is very likely bluffing hand for villain so that changes the vbet:bluff ratio in favour of value bets? Would it be correct to call lower flushes first and possibly fold all 2nd nut flushes since we have enough combos of lower flushes to have a 58% defending frequency? (Obviously after calling our nut flush combos.)

I guess the main problem with that is villain might possibly value bet 3rd nut flush although he is more likely to check/call turn or check turn bet river.