Tanking AND holding aggro. Why you should NOT use art of war!

I am using purple QL 10.0/10.0 Talismans/Weapons, no aux weapon, no gadgets, no augments, no ambrosia.
The group have all three buffs (DA BS SF) and purple breaching signet is applied to the boss.
These guys do HIGH damage as you can easily see by the short time it takes for the boss to die. They have lots of high level augments, signets and 10.5 gear.