When a Blizzard employee states such idiotic statements such as "Ret is no where near the buttom" and "I have had Blessing of Freedom save many players in Mistress fights" and "Everytime there are two or more enemies, you just use Divine Storm to get your Damage up" you gotta question the validity of that employee.
He doesn't strike me as someone who has stepped foot in Mythic and i assume PvP (i don't pvp either, but i never comment on such things).
It is a fact that Ret is a low viability spec in higher content, it may not be to bad in Heroic and Normal raiding, but it is deffinitly behind most other specs.
Our defensives are subpar, our damage (ST and AoE)is subpar and our movement is near the buttom.
The spec is designed as a Burst spec, but many other specs have surpassed our burst with their sustained.
The Spec used to have great AoE, but that too is subpar now.
Only reasons i personaly keep my Paladin in Mythic is i dont have the time for alts and my Guild has attendance issues...