I think this is BS. In the duration of one Crusade I'm doing about 12 million damage. In one Avenging Wrath with no DP procs I'm doing about 7 mil. Averaging 2 DP procs per Avenging Wrath, that goes up to ~8 mil. I really don't think DP is making up for an extra 4 million damage over 1:30 even with god tier procs. My own tests have shown this to be true as well. And you don't always get god procs anyway. Sometimes you get dry spells, and that's when Crusade really blows DP out of the water.