If you are unsure about your DPS you are better of studying those EJ and MMO guides. iLevel is not a good way to measure dps up to. Ilevel represents a range of dps (x - y) and x and y could very well be 10k dps appart on a dummy even. So you cant draw any conclusion out of those dummy numbers unless you are miles behind, and if that is the case then you should go study those guides as I said. I understand the demand for a decent benchmark and even though WrathCalcs and SimCraft are tad off they will still give you a better indication then ilevel=>dummyDPS. Simulate your char self buffed and you get a decent impression of what you should approximaty be able to do. SimCraft is actually close to spot on for me, have to double your starfall dps obviously and imagine a weapon and trinket upgrade onto that dps and its pretty close.
And yes you need to DPS a dummy longer then a few minutes to generate a number or a log that you can actually work with. Especially since our DPS is so crit based, it could be all over the place on a 6 minute fight, like those people that claim to do 67k dps on a dummy wearing ilevel 485!