Originally Posted by
darkwarrior42
This cropped a while ago on this forum as well. There's no bug, so far as I can tell, just people not reading things properly. Warcraftlogs shows data in a couple of different places, and if you read the wrong column it can look like your block chance is a lot lower than it actually is. (If you're looking at warcraftlogs, go to "damage taken", then mouse over the coulmn "hits" to see how many of those were blocked; you can also mouse over "misses" to see the miss/dodge/parry breakdown. If you mousover the "damage taken", you see what % of the damage was unblocked, and what % of the damage was blocked.)
Also, one of the people making the complaints is confusing real block chance with what the mastery says. I agree with him in that I'd like to see the tooltip on mastery account for DR, but the block chance on the character sheet is mostly accurate so it's not that big a deal for me.
Looking at one of my first M BRH runs, i see a block chance of 22.5% on me against melee hits for the entire dungeon. Mousing over the damage taken column, I see I took 84.78% of my melee damage from unblocked hits, and 15.22% of my melee damage from blocked hits.