But we're talking about BiS. @_@ Even if it is shaving off 4 GCD, that's the best you can get for your role as (essentially) an extra DD. If you're tanking it, there is no other stat outside of VIT that mitigates any damage for WAR besides Parry. So stacking Parry is kinda what you have to do. It doesn't scale well (honestly, no secondary stats do scale well except for linear ones like accuracy) but it's all you've got to work with.

Just to be clear: BiS is sort of pointless at this point of the game, that's the reason you have these objections in the first place (and why I agree). You'll get the most damage by using DPS gear but it's minimal. As long as all your pieces are i90 and you're at accuracy cap for t5 you really shouldn't be worried about obtaining BiS as it will be quickly replaced in 2.2 with higher ilvl pieces.