I'm playing Hunter/Feral in 2s atm, and every time we meet a ret paladin we seem to lose (unless he's a really bad player)
These self heals "word of glory" every 10 seconds healing for 60% of either his or his friends health is just so fucking insane, along with sacred shield and bubble. for obvious reasons we can almost never kill a healer with all of the stuff like barkskin, bubble, desperate prayer which we simply don't have time for as double dps.
Usually though, its a ret paladin with another DPS, and no matter who we go on he can get like 2-3 of these words of glories out and we lose..
So yea, he heals as much as a normal healer usually does against us with our CC's, with his WoG, and he also does as much damage as any class normally, and with wings up its 30% more and thats just fucking immense and kills me with a warrior within a stun after i trinketed their first stun.
TL;DR: WoG is OP.