Math is off on mastery % for bm
give yourself just the mastery buff (3k mastery) as survival, your mastery will go up 5%
give yourself just the mastery buff for bm,your mastery will go up 10%
580 TED as survival gives you 4.2% more mastery
580 TED as BM gives you 8.4% more mastery
So your figure of 8835 dps would actually be 17,670 dps as bm.
Simming these trinkets through SimC all tier, and at the same ilvl, TED has always been 8-10k higher than HT.