Originally Posted by
Aranoch
Take into consideration that the dual wield crit cap is lower than the 2h one since you have no glancing blows. This matters since your white hits critting is the only defensive bonus you get from stacking crit. Once you go above the cap it's only special attacks that benefit, which translates into damage and statue-shields. Damage is not all bad, but gearing solely for crit with a DW setup wastes a bit of the stat values if you overdo it.
E.g. proccing RoRO to over 80% crit with dw, as an argument for proccing EB is not really true, you're getting 90% damage out of the procc while dropping some mastery. It's a fully viable way of tanking, just wanna point out that the illusion of crit being a tanking stat only works up until the crit cap.
So, in my opinion, hold onto the 2h TF stick and stay clear of LFR RoRO. Procc rate scales poorly for LFR as people have shown above.