Testing in raid is the same as dummy maybe little worse.
And how paradoxal was that statement? Why would someone go for the dummy if it is actaully a worse reference? You are just shooting yourself in the foot here. Dummies are only viable references if you want to test rotations and look for procs.
At the dummy u can have the same buff as another players and u aren't affected by another dps in party...
You are missing the point. A spec isn't getting justified by one test with all CD blown on a dummy, boss, whatever.... The relevance lies within a whole instance run and data gatthered from AOE fights, boss fights, movement fights, static fights, procs, buffs etc etc with X or Y spec in mind (and not just the spec name but the spec in detail). The longer parses, the better result.
For example my top dps in naxx25 at patchwerk is just crapy 5100 and its the top dps in our raid too... no one pass 5000 dps at PW in my raid just me... I'm sure that in better raid I'll hit 6000+ whats really big difference
That doesn't tell us anything. And Patchwerk is not a way to describe how viable your spec is.