Question: How much threat does a devastate do when there are no sunder armors yet applied and how much does it do when there are 5 sunders applied? From talking to 2 different death wish members in game, they told me that it will add the threat of the sunder armor effect for the first 5 times. I was initially inclined against this, so decided to test.
From testing with Snowbeast from zod, 5 sunder armors did 6.0k threat. 5devastates did 6.5k threat. 10 devastates did 13k threat. Now, if devastate was receiving additional threat, you would expect the total threat value to be lower than double.
I am mainly concerned because if indeed it applied the threat from the sunder effect, it would do more threat than a shield slam and should be used as the gbl cooldown successively until 5 sunders are up. From the testing I've done thus far (I want to do more still), I conclude that a devastate when 5 sunders are up does MORE threat, not less, than when no sunders are up yet, since it does added dmg for each application of sunder. This logic would imply that it is beneficial for dps warriors to sunder the mob as soon as possible to get the 5 sunders up, allowing the tank to get more aggro quicker.