Bryntroll Works better if you have a 2pc T10 + 3pc Arena, SoCommand spec and all the PvE gear you can fit without making you too squisy (don't dip below 500res) which is what I'm personally running just takes more gear to mix up.
Damage with good RNG is overwhelming and constant with the above spec, if the team happens to stack, depending on how long they do I've ran healers OOM from the havoc caused or someone died caught in the 'Divine Bladestorm' anyway from the splash.
Does a great deal of self healing with DS glyph, extra BT procs since you're scoring more hits and clever AoW usage.