According to the blues
For further clarification, the idea is that it will provide the threat of Sunder Armor and Devastate and replace Sunder Armor. Hopefully all you number crunchers come to the same conclusion when you get a chance to test it. :-)
So... I'll be doing 301+50% of weapon dmg+dmg threat?
That'd be like 500-600 threat on a 1.5 cooldown? Or is this a confused blizz poster.