Please review the rules you agreed to when you signed up for your account on these forums. This post breaks rules 1, 2, 4, 6, 7, and 9.
I'm not going to point out all the specific ways you need to improve your posting, as you really ought to read the rules for yourself. However I should mention that training dummy dps is a patently useless benchmark, almost completely irrelevant to actual raid combat situations. Aside from losing runic power from AMS, as you mention, you also don't have all the buffs and debuffs you get from other raiders. Further, unless you can devote hours of consistent attention to the project, your time spent attacking a training dummy will have too much RNG to be a useful representation or prediction.
I have quick question. What is DPS difference between Frost and Unholy on a raid dummy.
I just switched from Frost to Unholy and was devastated by amount of DPS i have lost.
I know that Unholy has big dmg income from AMS, which cannot be used on a dummy, but 4k dps is too much i think.
I have 394 ilvl in both specs. In Frost i run with HoM (n) and No'Kaled (n), i do around 26k+ on a raid dummy. In Unholy i run with Gurthalak (n) and i do around 22k+ on a raid dummy.