Ok, well I was told to bring this here, so I will, the Demon King and Supreme Deity's High 4-C rating shouldn't exist
At no point are the Demon Realm and Goddess Realm said to be Dimensions... I mean for all we know, the two went to a separate dimension that previously existed and built societies and that's all it means, I can agree to them being planets, that makes sense to me, but assuming they created entire stars is ridiculous, they could literally just be separate planets in the same dimension, which is implied since we know that Sunshine is connected specifically to the sun and can be used in the Goddess Realm, implying the star in the Goddess Realm is the sun and therefore the Supreme Deity didn't create it
And I don't mean they are both Earth, I mean they separate planets in the same solar system, like for all we know, the Demon World could just be Pluto, you can't see Pluto or it's Moons from Earth with the naked eye, but that doesn't mean they are in a separate dimension, not seeing the Demon World or it's moons from Brittannia clearly doesn't mean they aren't in the same dimension
And overall that's my argument, TBH the feat feels way too vague to be used, but I'm ok with it being 5-B