I did a little testing today.

My DK's are iLV 354.
They have Conquest: Chest, Shoulders, Gloves, and 2H Swords.
Their remaining pieces are Honor.
They have no click trinkets for DPS (Chance on damage +912 Str & PvP Trinket).

I was using only (Team) buffs for these tests.
Specifically: Kings (Pally), Horn of Winter, Flask of Enhancement (Alchemy).
No pets were used, this is straight DK DPS.

Did two of each test, so the average should be decent.
Made sure there were no debuffs on the Target Dummies.


HB > FS > NS Rotation (Single Target)
01:00 Test
- Min: 10,800
- Max: 11,300
- Avg: 10,950

00:15 Test
- Min: 12,200
- Max: 13,200
- Avg: 12,775


HB > FS > NS Rotation (One extra non-heroic 85 Target Dummy in range)
01:00 Test
- Min: 10,900
- Max: 12,400
- Avg: 11,800

00:15 Test
- Min: 12,800
- Max: 13,900
- Avg: 13,425


OBL > FS Rotation
01:00 Test
- Min: 09,500
- Max: 10,700
- Avg: 09,875

00:15 Test
- Min: 10,800
- Max: 12,000
- Avg: 11,400


DS > FS Rotation
01:00 Test
- Min: 06,000
- Max: 06,800
- Avg: 06,350

00:15 Test
- Min: 05,500
- Max: 08,100
- Avg: 06,450