But I think Larian knew it was crazy strong, so they decided to NERF IT.
Yeah, you hear me, it's a nerfed ability : enemies can STILL DODGE YOU when KD.
I'm pretty sure that, irl, nobody can evade an attack if unconscious and lying on the ground.
I never got the impression being knocked down meant you were unconscious. If you're on the floor, you can still roll to the side to avoid an attack, I think.
The issue is that that isn't animated, so it looks silly as hell.