Originally Posted by
Renascido
I got you point, but I guess we assumed that because of the lowest item, like you wrote.
We assumed that epic is more rare than rare items, but even if you check the classic that is not true. Let's use the Askhandy (or w/e how to spell that name right) for example, it is a epic item indeed, and not everyone had access to this, but a Orb of Deception was even more rare than any epic, because the loot chance was lower than those epics.
Did you got what I mean? We never had any official position of Blizzard explaning that the item quality (that you have mentioned) means how rare it is, even with the categories of quality having names of rarity...