Well, I do suppose you make quite a fair point about whenever Joe uses the term "universe", mainly directing to continuity and series. Though as for the scans I provided, I made sure it didn't have to do with such, I'm positively certain the two posts I put in are more or so direct when it's emphasized as "in his own universe". However, regardless, most of these cases do indeed refer to your point.
If I'm not mistaken, the real world has also been referred to as "universe",
more than once before. Yet, I do agree that there must be more statements for Low 2-C. In the meantime, I guess we'll just have wait a little bit until we receive more information. How about these though? Could this maybe have supporting evidence, or is it more of a continuity type of thing like you said?