You are correct, though it would help to clarify that you're correcting the GP on the "per kilo" part, and not the "energy" part. I agree, if you're deploying

You are correct, though it would help to clarify that you're correcting the GP on the "per kilo" part, and not the "energy" part. I agree, if you're deploying 1 kg of fissile material, only 0.1% of that will be converted to energy. We should talk about energy per mass of fissile material, not energy per mass of "mass difference".