Make Loot Tables Even

GMs always claim boss drops are random, yet when asked of he could officially tell me that all items have an exactly equal chance to drop, suprise, suprise, he "couldnt discuss item drop chances" which basically means "NO".

So GMs saying drops are "random" are either lying or just REALLY stupid

IF one item has any tiny amount higher chance to drop that is a bias and its not random, in fact, if there are any factors affecting the result then it isnt random, and goes against the definition of the word which defines that all selections must have an equal chance.

Why does loot have to be biased to drop more often for some classes, were all pay the same amount of damn membership fees.

Why cant each item from each boss just have the same chance of dropping?

Why are blizzard so opposed to equality? And why do they lie to peoples faces.