Ok, I'll clarify.

The Black Cup is an ancient relic that just sort of appeared. It turns women into Deimos, after they 'fill the cup with the blood of their enemy and drink deep of the cup'. This grants them the Strength of a Hundred Men - badly translated at first, but recently revealed it actually multiplies your physical strength by a hundred, rather than some vague man being used as the base - and Skin like Steel - again, badly translated, it actually means a Body like steel, which includes skin, bones, organs, and hair - but doesn't really bind them together. It simply allows for a hive mind of sorts when one of them goes mental, other times they are only binded as closely or as loosely as they wish to be. Until Nena drank from it and became the strongest Deimos ever - since she was born from a War Goddess and The Beast, that power being multiplied by a hundred made for something unfathomably potent, physically - there was no connection to the Kabal Family. Nor was there a hierarchy, and really there isn't one now. Nena being the Queen simply means she is the strongest that has ever, or quite possibly will ever, exist. And the term 'Deimos' was coined some time after they started appearing in the universe.

The Deimos are a group of super-powered women, even the weakest could give Superman a run for his money in an arm wrestling match, who generally do what they want to do. They aren't Gods, or Demons, or anything like that. The Black Cup just gives, it doesn't change. A human would still be a human at the end of it, not a Demon. 

So, if by some miricle a Demon actually existed that was powerful enough to take on the Demios, and not only be able to stay alive long enough to stuff his guts back in, but actually beat them, he still wouldn't be anywhere near being King of Hell, and then would have to anwser to The Beast for hurting his daughter. They may not get on very well, but there is still care between Father and Daughter.