Whether a structure that is stated to be above dimensions in a verse with only 4 dimensions is adequately modelled as 5D space is just of no relevance. Some might be. Some might not be (like your example). However, that is purely a question of the nature of the space, not a question of size. I think the size of such a space could very well be equalised to that of a 5D space. Think of a conceptless void, which is later replaced by a 3D universe. The void can't be modelled as space or dimension of any nature, as it lacks such concepts altogether, but in terms of "size", as we use it for tiering, it can be equalized to the 3D space that replaces it. Different isn't superior. I believe I mention that roughly every time we debate something tiering-related.