I don't have the luxury of a raid who's willing to actually test in fair conditions (premades and what have you) so I tend not to use raid results but objective testing methods like the shat stuff. and y'know, 2-3 minute pulls not exactly best way to test balance.
Obviously that's going to have different results than what we end up in during raid, but its an easy way to measure potential before dealing with mechanics.
So I have sat there on the single target dummy with all 3 specs with all sorts of talent combinations and I tend to see similar results every time. The class itself seems balanced within itself beyond the obviously terrible things (servitude) so it's more just where they want us to sit vs other classes in situations. And I have a feeling this is pretty much intended.