I figured I'll level 60 could destroy a level 15 dungeon and no time and it would make sense they would not get any experience but if you are that high level you shouldn't be doing the low-level dungeons anyways I'm talking about a level 30 doing a level 15 dungeon solo just as an example yeah they're a bit high level but going in Solo would still be a bit more difficult they could reduce the Rarity of the item drops to help even it out