A lot of the things we toss around on these boards is real subjective - I mean, how do you concretely determine that a detergent removed a wax or sealant layer? How do we put a concrete value on a sealant or wax life? How do we concretely determine that wax a has a warm, rich glow as compared to sealant b that has a sterile, plastic look? It`s all highly subjective, and would be extremely hard to prove in a lab environment (which I assume a few car care product makers may do) let alone in the "real world" with no controls and extremely variable conditions.