I already have formed the opinion that, at least in PvP, Heavy Armor offers far too many advantages over light and especially medium armors, but regardless of that...
The Heavy Armor skill "Immovable" seems to be extremely powerful and almost necessary for PvP. With one cast, you receive physical and magic based damage mitigation, but the real treat is being immune to knockbacks and 'disabling' effects for 8 seconds, and you can morph it to last longer.
We all know how good CC and stuns are in PvP, and this ability just seems like it will be too good.
Is there any kind of CC that bypasses this ability?