Q:
Virtue of Justice
A:
Tested, it scales off each individual players condition damage.
I am working on a bit of a hybrid build, tanky/support with burning being the only major damage output, so this is important to know, as I will be balancing Vit/Tough/healing, and probably condition damage.
I would assume since the damage becomes their damage, it will scale off of their condition damage.
Guess I will have to grab a friend and test on two of the same mob, changing my condition damage between mobs.