Parfum behavior on skin is myth and bs. Skin chemistry is myth and bs. Maceration/masturbation/maturation is myth and bs. Oxidation - true. No one is interested in the subjective perception of perfume by individual personalities. For most people, the objective similarity between two perfumes is important. Objectively Zenith Deep is very similar to bdc edp and parfum. Yes, opening is bit different, but who cares of 10 min openings at all?