Possession counts for a lot more than theoretical legal legitimacy. Who is physically in control of the bulk of Chinese territory?
So in your mind, the act of murder "counts for a lot more" [0] than someone's right to their own life, and theft does not exist, since whoever possesses something owns it?
[0] What's the unit we're counting in? How do you "count" intellectual integrity or moral character?
Unless it's barbarism then. At that point I'm pretty sure the biggest functional nuclear stockpile wins though.
Sure it does. The laws are written by those who can enforce them. That is by definition those with Might. If that is barbarism then all of earth is under barbarism (and I'd argue that this is true).
History is full of good examples. The Nuremberg trials is a great example of Might Is Right. The exact same laws used against the Nazis never were enforced on US citizens.
After all, there was a reason the Founders advised that it was a great evil to put a law on the books that couldn't be reasonably enforced due to the tendency to deligitimize the authority in question.