Doesn't have anything to do with the class you play (unless you play a hunter). Most everybody will agree that hunters need their damage tweaked and bugs to be fixed.
Even occasionally, you'll find a hunter that actually agrees with this!
some specs are at least a bit overpowered, i have some examples :
- shadowpriest ( especially with a shaman )
- UA lock ( especially with a shaman )
- Hardcap arp warrior
and the 4 healers both have annoying side so i think they're quite okay, though i imagine how hard it should be to keep someone alive as Rdruid against a Rshaman / Dpriest team :/