Quote Originally Posted by Donjo View Post
I crunched the numbers and found that stacking Parry is more useful for Paladin than it is for Warrior.
This makes no sense given that blocking happens before parrying. That reduces the value of a parry point considerably. (you've also done your math incorrectly unless you're using numbers other than the ones you posted).
If you have a 30% block rate and a 30% parry rate you're going to parry about 18% of the time (that is 30% of the unblocked 60%) for a total of a 48% chance to do some mitigation.

But 30% parry on a warrior means you're going to parry 30% of the time. So a point of parry on warrior is 1.7ish times as much mitigation as it is on a paladin with 30% block rate. Obviously this number changes with block rate, it it would always remain that parry does more for a warrior than a paladin.