Nice Lothar! interesting stuff

I think back to a few other points about the reliability of parry and featherfoot. They arn't something you should be relying on tbh. They are not activated skills that you should be popping for large hits. (well featherfoot is active, but just pop it a ton)

Thier main purpose is to mitigate and the idea that a single mob doesn't attack very often is flawed as well. Auto attacks and queued skills from a boss can and do occur very often and in rapid succession.
You won't even see it normally unless you die from it. But this is where parry is useful, and mitigates damage.

I think a better word for parry would be "luck" because yes, the value you actually parry on a particular fight can vary wildly. And I have out parried a tank that has 100 more parry than me. It happens.

Parry should never be viewed as reliable mitigation for large attacks. It's great when it happens but its not what it is designed for. Parry is still useful for single mob tanking. It just isn't the best in the world.

I think having an overall understanding of parry and why you should or should not have it is helpful to this discussion. Everyone's input here has hit on some key points about parry and its reliability or lack there of.

I just don't think that parry was ever intended to be reliable. But that doesn't necessarily make it bad either.