Haha, the trolling at the end was pretty hilarious. Must have suck to be the SM in this, though.
Probably would have to rush to T3 to counter with Orbital? Or just counter-spam Scout Blind Grenades. Any decent AOE would have wiped out most of that force.
Fair and balanced, Dire Avengers are not op at all. Eldar boylovers should cry a bit more about poor useless Eldar.