You can kill anyone through any defensive cooldown. I'm not sure what your point is here.And that crap about Shield Wall and CR. Trying to defend shield wall as being anything other then a joke makes you a joke. Because the facts make it a joke, 40% damage reduction, 50% damage penalty, 5min CD, 12s duration. If you played any Arena in Cata you know that Shield Wall does not do its job, that you can by killed through it, and it helps the other team by effectively making your offensive pressure 0.
DBTS is filling the role of standard damage reduction cooldown - 100% parry means melee/hunter immunity and the 20% DR is equivalent to things like Barkskin, IBF, etc. The difference is that the Warrior also has Shield Wall, and they don't share a cooldown. Warriors are going to be harder to kill than most other melee.
If the Rogue pops CR, just CC his ass because he can't do a damn thing about it: when he popped CR, he gave up the ability to avoid CCs and magic damage via Cloak.CR is not just against swords, its everything, it costs nothing, and it will hit 50% damage reduction if the rogue is continued to be hit, and if the rogue isn't getting hit then THE ROGUE IS NOT GETTING HIT!!! AND IT DID ITS JOB BY KEEPING HIS ASS ALIVE; while at the same time letting the rogue be 100% offensive.
If you're trying to say CR is overpowered... heh.
They aren't.God forbid Warriors aren't completely useless with a shield on.