What is good about Shield Block Rating?
So far I have been stacking avoidance. I am around 45% dodge+parry and 17% shield block.
But I see some high end tanks that are around 40% dodge+parry with much higher shield block, more like 27%
I'm sure they know what they are doing, but I don't understand it. If a block mitigates on average 25% of the damage from a hit, then you would need 4x the shield block to match an equivalent amount of dodge/parry.
So why would you give up 5% avoidance to gain 10% block rating? You would obviously be taking more damage (save for fights with very weak hitting bosses, like Loatheb). What am I missing here?