You can see the difference. Awareness is just a better glyph for 0/18/53. I still have not been able to replicate a Frost build that was over 7.2k DPS. As far as I can tell, Frost builds and Unholy builds are neck and neck and it's just a matter of choice at this point. The 4pcT9 set bonus heavily favors a Unholy build but Frost scales better so it should be interesting to see what wins the horse race in the end.
Interesting thing about the 4pcT9 set bonus is the way Wandering Plague works. Wandering Plague just copies disease damage by 100% so if a disease gets a critical tick when the Plague checks, Wandering Plague will use the critical damage amount. Better scaling for Wandering Plague is a good thing.
Edit: I used 200 ms latency and Astalion, please use the real simulator if you want to verify my spec. Your simulator has always had different numbers than the standard simulator.