Hi Firestorm, since I can't write in the thread, I'd like to explain GoW's verse mechanics to you via message wall. I wrote in DM, but I think it's better this way
First of all, let me point out that after 2 or 3 revisions the "higher existence" was recognised as a 5-dimensional spatial dimension so a higher plane of existence. This is because more than one infinite 4-D universe contains within it all the infinite 4-D pantheons and transcends them and exists on a higher plane of existence which the lower plane cannot reach.
This is supported by feats.
The infinitely more powerful Athena is in fact a higher plane of existence that encompasses and transcends all pantheons, so that the higher plane of existence is 5-dimensional and is a spatial dimension of "universal" size, containing within it more than one infinite structure
As additional proof, 4-dimensional beings and forces affecting infinite(size) 4D universes structures cannot harm Athena, touch her or even feel her.
Barlog states in an interview that when Athena evolved into higher existence, that is, into 5-dimensional space, she completely transcends the power of every being in the Greek and lower plane of existence, this a "transcending" level of existence and power that they could never reach or interact with.
In short, Athena scales to a (higher) 5-dimensional plane of existence that encompasses and completely transcends all of the realms, and is supported by the feat and a few extra emotes in the game because of UES.
If your problem is the difference in power between the higher plane of existence and the lower worlds, this is both stated in the verse and if spatially scaled to a 5-dimensional space, the character is by default infinitely more powerful than any 4-dimensional forces and beings.
I'd also like to point out that any character that scales to a 5-dimensional, universal-sized spatial dimension is infinitely powerfull, so qualitatively stronger than any 4-dimensional power by default.
I want to write this statement because very few people ignore it.
If a character scales to a 5-dimensional, universal-sized spatial dimension, its power by default is infinitely higher than 4-D powers. This is the case of Athena