That zealot ritual is completely in line and won't be changed for any reason. The argument was something about zealot ritual being offensive and runie rune being defensive, so the wild difference in performance was irrelevant.
Edit: should add that this is indeed completely valid for a 6, but in warband play or anything AoE related the ritual is about as broken as infinite AP pots off the gcd with zero second CD would be. Actually even better than that.