Some players might be folding lower flushes, but almost no one folds 2nd nut K high flush. That way, I can know that someone else might be holding a 2nd nut flush ( K high flush) as I don’t hold the K myself. In such a scenario, I would rather have any other ace-high flush but the AK high flush. There is one situation where having AKs is not optimal. One exception – When the bigger cards are not always better Please note, due to the little chance of having a straight flush of 0.0014%, I just assume that Ace-high flush is the nut flush, and an opponent doesn’t have a straight flush, which would beat our ace-high flush.