I get what you are saying but thats the problem with 'probability' vs 'chance'. Imagine those 6 armour items were lottery balls. All 6 have the same chance of being blindly chosen. Now take one out and put it back. Does that change anything about the chance that it could be picked again? No. You still have 6 balls all equal to each other, and each still has the same chance of being chosen next. The nunbers 1 to 6 have the same chance of being drawn on the lotto than any other combination of numbers, but we say its probability is low. And why? Because we drew numbers on them. Doesn't seem fair does it, poor balls. I got Voidfang (again) last night from Nightfall, but I have the same chance of getting any other item.