Then I get to use Earthquake for CC but not for Damage. See? Tradeoff. Tactical.
You're trying to nit pick so hard you're missing the points.
If RNG cc becomes a thing, non-CC abilities will suck unless we nerf all the CC-related skill damage to be wayyy less than non-cc. Why would I ever use move that deals the same damage but doesn't have bonus attached?
You're not asking for just an armor change. You're also asking for an entire game rebalanced around it. Might as well be a new game.