Ok, So I took advantage of my free respec with the new patch and specced 50/0/21 for the new UHB. In heroics, on boss pulls, especially ones with largely sustained DPSing the boss, this was worth a range from about 2-3.5% of my overall damage done. Not huge, but sustained, as opposed to the burst from DRW we all like to save for special occasions. Plus, the lack of downtime keeps us from missing out on several thousand damage if a pull ends before our next burst moment. I plan to run some serious numbers on it later tonight. I was wondering if anyone else has had different numbers? Will include armory once its not being maintained.
Spec:
Edit: Numbers still consistently in that range for UHB ticks. If someone that is running a 51/0/20 could shoot me the percent of damage done by abilities modified by DRW, I can crunch the numbers and see about efficiency. But the way its looking now to basic math, unless you maximize uptime of DRW vs maximize effectiveness, odds are, the persistent damage of UHB will edge out DRW now. If you wait for the perfect time to burst, it may slide a bit higher if the fight is well timed for bursts. I think this will end up being a very situational contest that won't end up with a perfect answer.