TBH I always found that even the "realistic" numbers on any DPS rankings sites are not really representative of what most players should expect to get out of their character, let alone a multiboxed character, where by default optimal play on all characters is even more rare.

My current hunter setup does nowhere near the numbers stated on that site. At 701 ilvl (no legendurpies) I can maintain 50k on a Dungeoneer's Training Dummy and about 37k on a Raider's Training Dummy. Running MM Lone Wolf, tested with just the 5% stat buff (7 million damage done sample size).

Might just be that I suck at creating rotations, but I really doubt I could tweak this to suddenly get 20k more sustained single target DPS.