Much theorycraft here.
First off, it seems block/crit can mix in PvP but not PvE.
Second off, they can't figure it out conclusively yet. Best evidence currently supports the theory that Shield Block is somehow different from the innate Block rate, thus modifying the tables differently. Observations show that > 100% Block means no crushing, but > 100% Block/Parry/Dodge combined does not mean no crushing (I can't support this, I'm just going off what I'm interpreting from the thread).
First off, it seems block/crit can mix in PvP but not PvE.
Second off, they can't figure it out conclusively yet. Best evidence currently supports the theory that Shield Block is somehow different from the innate Block rate, thus modifying the tables differently. Observations show that > 100% Block means no crushing, but > 100% Block/Parry/Dodge combined does not mean no crushing (I can't support this, I'm just going off what I'm interpreting from the thread).
Trade yourself in for the perfect one. No one needs to know that you feel you've been ruined!