Huh, so it wasn't just me...
Well, IMHO I do think the wiki can be too lenient when giving the 4-A rating with starry dimensions. To be honest, I think that as said above, cases should be analyzed individually and carefully to see if they are consistent with what the verse has shown.
For example: the case I find most iffy is Kid Icarus. It has consistent tier 6 showings, yet based on a single display by Hades it makes a huge tier jump to high tier 4. Unlike, for example, Castlevania which has dimension creation as a well established part of the lore regarding Dracula's castle, several instances of dimensional warping with monsters and tier 5 and lower tier 4 showings IIRC, that add up to the 4-A. I may be missing something, but do are we told that space was some sort of galaxy or such or large enough, it seemed more like a void of undetermined size, the stars could be a simple stylistic choice (and the clearest showing was the heart itself which could be a simple design).
I mean, playing devil's advocate for a bit, what if the stars are illusory or a simple representation of how grandiose the power of the character is (because that's what authors use it for at least), how do we know the stars are really there and aren't simple projections seen from within this strange created dimension, how do we know for sure this dimension is large enough to contain stars and is not just limited by inivisible barriers (this HAS happened in fiction, will post examples later).
That's why I mean we need to analyze each case, if cosmic power is consistent with the verse's lore, if the story does backup a true large enough space, whether it was really created, etc. I do feel, many times the argument goes ends too quickly with "starry sky? Oh, 4-A." And from what I get it, as mentioned above, it has been adressed but... what about Outliers and Inconsistencies? I mean, DmC had the case against it for this reason and how it went against it's continental level feats.