This^
And to explain Hoopa a little more, Hoopas rings, which use infinite power, could only forcibly interact with the dimensions of the Creation Trio when using it’s true form and power, Hoopa Unbound.
But even as Unbound, Hoopa can’t in any way interact with Arceus’s dimension, proven by Ghris sealing it’s power and whatnot (you can check the scans I put in the OP). Giving more support of Arceus’s dimension being superior
And like many of us also reiterated, the difference in superiority doesn’t need to be infinite to reach Low 1-C as our standards show and accept (hence cases like Archie Sonic and the chaos force becoming Low 1-C without needing such a requirement).