- Parry is only possible against physical attacks.
- The parry stat scales very VERY poorly, you have to get a LOT of it in order to see a tiny difference. And by doing that, you're wasting a LOT of good DPS secondaries.
- Unreliable form of mitigation. When big physical damage are incoming, you and your healers can never assume that you will parry. You have to prepare for it with your tanking stance and appropriate cooldown usage. If RNG decides that you parry on top of that, it's unneeded and unexpected mitigation which leads to overhealing most of the time.
- Only useful when actually tanking something, while DPS secondaries are useful 100% of the time.