User blog comment:Numberland/Treatment of difficulty in bosses/@comment-4515751-20151107183239/@comment-24150802-20151108010537

_"Re collection quests, does anyone know if you collect items at the same rate independent of which quest it is?"_ Yes. The drop chance for quests is independent of the quest.

Of course you might not collect items at the same rate for each quest if your Perception is different during each quest.