Because of how hard one picks, the type of picks one uses, the strings one uses, and the pickups themselves, plus pickup height all contribute. I use 1.5mm jazz 2 picks but use 9 gauge strings on all my guitars and my pickups are all hot or med hot pickups the BKP Holy Divers and my JB Jazz set are med-hot, but my EMGs are hotter, and yet all of them set off the clip notification at around the same setting or close. You also have to realize passive pickups are much more dynamic than active pickups so passive pickups can set it off lower or higher than one might expect, depending on things I mentioned in my first sentence (like my Holy Divers do). My EMGs are good between 15-20%, but my BKP and JB are 5-6%