Originally Posted by
DarkenedHue
To be specific, its strikes are doing too much damage. This is easily evident from comparing your observed damage in-game to either what Kahorie's Simulator says it should be, or to an actual retail log.
DRW is certainly still plagued with plenty of buffs. Given its complexity, and considering how poorly dissected the spell was back on retail, it'll likely take a good while until any private server achieves an accurate approximation. Overall though, the net effect of those bugs is most definitely positive. Glyphed DRW on retail would comprise 3.5-4.5% of a Blood DK's damage, in pretty sharp contrast to the 7-8% of your damage it currently does here. The culprit behind this discrepancy is easy to spot if you know what the ability's damage breakdown should look like. Its strikes are doing a good bit more damage than they should.