Ilvl restrictions for leveling dungeons?

[Kazgrel]

But yeah apparently I'm the noob for being unable to keep a tank with lvl 1 gear alive in a lvl 47 dungeon.

I've been lucky enough to run into something similar to this maybe once or twice in nearly 3 years playing this game. Doesn't mean that such a rare occurrence (in my experience) should be acceptable. Maybe people think regular dungeons function like PotD? Who knows.