Return of Reckoning

What about 2h Iron Breaker and Snb Iron Breaker in ORvR ? Do they loose value more than Black Guard in these situations? Why?

I hear Iron Breakers mechanic "GRUDGES," isn't as good as its Destro mirror mechanic "HATRED."
So my question, is this why the Iron Breaker isn't a popular tank on Order side? or is it the combination
of not as good abilities and a worse mechanic ?

I see lots of Black Guards on Destro side in a ...