Is it just me or are casters op?

I'm not 100% sure but I think caster NPC damage is incredibly OP. IS this a bug or what?

I know a few of them hit really hard normally like the Sunhawk Reclaimer, though even those seem to be doing a bit more damage than what Wowhead comments claim.

If you take a video or picture of your combat log and look up the damage values and they don't match, report it to the bugtracker.