[Captain Kwok]

I see what is going on. Atrocities has his internals set to less to usually 1 or 2 HP per 10kT component. This is likely the reason why his previous armor seemed too powerful since the chances of hitting an internal through the leaky armor was remote simply based on chance.

Atrocities, you can improve this by bumping up your internal structures rather than decreasing the armor strength.

Also note, some internals are rated better than most armor (see Colony Module) and that might cause some kooky effects that are unintended.