Normal Mithrios vs Heroic bonebreaker scepter
Simple question.. which is better?
Assuming that you gem it with +30 stam (why wouldn't you?), H BBS has 11 more stam on it making it better for EH.
Mithrios has higher weapon DPS, and expertise instead of hit (exp is harder to come by in ICC), making it typically better for threat.
Let's look at the dodge and par... HAH just kidding!
So yeah, H BBS for stam or Mithrios for threat. Personally I'd use Mithrios, because the two weapons are of such similar value that you might as well go with whatever has a cooler name.
yeah i got both of em i guess i'll just swap out depending if i need the extra threat for a fight or something
^ What Harmacy said. Just switch them out for survivability and damage.