Yup. Unova's Original Dragon created the region long ago alongside the twin heroes. Supposedly. But they fought later. And the dragon couldn't take sides.

So it split. Half became truth and half became ideals. And what was left became ... something else. They were once the same; now they aren't.

[ Equal, evenly matched, maybe. Similar, counterparts to one another, but not the same. ]

What you are saying sounds a little different though. To me, it sounds more like ... there is a lot of overlap? You are saying that you all are the same still, that no one took any pieces away from the others, so it does not matter. Is that right?