I found another fight where Taunt wins for me.
Deathbringer - Since we use 2 tanks to swap on the Rune of Blood having it to ensure quick swaps is nice. I hate saying over vent "I got it".... when I really don't. Sure you can have back ups like mocking blow (challenging is not an option if beasts are spawning) but with as much healing as there is going on (especially later in the fight with several marks up) I don't want healers hesitating if a taunt misses and throw them off.
There is something so appealing about backhanding someone across the face with a shield.