Or is it just me?
During Cataclysm it seemed like a majority of the Warriors, Paladins, and Death Knights I came across never had weapon chains which obviously bumped up the duration of the disarm affect. This isn't the case in current MoP, which is understandable, but the problem I've noticed is now when I disarm another player, it doesn't even seem to slow their DPS down.
DKs, Rets, and ENH continue nuking with spells, and doing absurd damage. Rogues can still throw Shurikens, and Monks and Ferals don't really seem to care about being disarmed at all. Disarming a Hunter doesn't seem to matter at all because his pet is still beating you up pretty bad, and disarm no longer affects deterrence. I don't know what Warriors do when disarmed, but it seems like they have a few short CDs which allow them to continue DPSing without having a weapon equipped.
Of course Ring of Peace on the other hand does feel really strong because of it's short CD, and how easy it is to apply. It can be very difficult to burst against a Monk team because of the fact that RoP is on a much shorter CD than almost every melee classes burst abilities.