I tend to agree, and really, considering the chance of being spotted does increase dramatically over time. Not to mention that a lantern or other torch gives a spotter a bonus. Along with annoying lights on items.
The difference between never spotting a dedicated stealther [max ranks, feats, items] with a quite dedicated detector [no feats, only skill and items.] and having a good chance, should be those spotting feats. +3 from skill focus, +2 and +1 from other feats, more if you take something like artist for another +1.
Keeping in mind that really, I don't know how much the best and most high end items should be coming into this arguement, because not everyone has them, that I'm aware of, and if they drop so rarely, then that makes them a high level 'boost' late character at best. not everyone is that well equipped.