Apologists: The Covenants will be balanced so you won't be screwed if you select one over the other.
Meanwhile on the front page there is an 8-min video of a prot paladin one-shotting people at 2500MMR because the current rented power system is complete bollocks and entirely unbalanced. It's ok boyz, the next expansion will fix it when Blizzard will say that they've learned their lessons (again).