Prot warrior? Wat...
You probably never played MoP at all because it seems like you don't know anything about endgame during this expansion.
Prot warriors sucks in PvP. They are only viable in premade battlegrounds or rated battlegrounds. Nothing else.
Since when was Protection spec more viable than destruction warlocks and every other DPS specs that each and every class has?
Seems like your list is based on your levling experience on Stormstout.