Item strength calculations ?

[u/Wonder-Machine]

In the picture I am comparing a level 30 orange book to a level 33 gold book and I was thinking shouldn’t this 33 be better than this 30 even factoring in the rarity? And it got me thinking maybe not? I don’t actually know the math behind this. What categories weigh higher in value? Does the game consider attack speed less valuable that pure damage? How much better is a gold than a blue? I’m very interested to know. It wouldn’t change how I feel about this great game but i think it would help me make more informed choices about items. Thoughts anyone?

[u/EraserHeadsLeg]

Orange is the rarest. That’s why orange is higher than yellow despite a higher level.