I was in VA last night i218 PLD w/ 210 weapon. Doing pure GB/ra/ra rotation as OT while under geared PLD/war fought over MT. Didn't seem to cause them trouble ( they were doing that themselves )
Got to 13% on the A8s dummy in case that means anything to you in terms of dps using the same gear/rotation.

Now if the other two tracks weren't fighting over MT, and we're and to do fewer aggro combos, maybe ib would have encroached on hate. Hard to tell.