Since we reached soms type of conclusion about how we treat 3-A [I think]
There are some cases:
1-If a verse in fiction has a multiverse, or that the universe is a space-time or something along the lines.
Then the destruction of the universe [the entire thing] along with statement such as "I will destroy THE ENTIRE/THE WHOLE/ EVERYTHING IN the universe and the universe itself" should automatically give low 2-C result since in these situations, the universe is a low 2-C structure , thus the destruction of the universe itself [and not just matter, but the whole thing] should be by default low 2-C.
2- if a verse treats the universe as just 3-A or high 3-A then the destruction of the whole universe would just be 3-A or high 3-A as our general assumption.
Tho this would lead to some problems, thus I say we should create some sort of requirements in order for a universe to be a space time in order for us to treat its destruction as low 2-C. [Like we do with lazer/light speed stuff, we have 4 requirements in order for a beam to have lightspeed, we just make the same thing for a universe] if a universe doesn't meet one of the qualification, it would simply be 3-A [unless proven otherwise].
3- as for requirements, I suggestqwe either create a thread for them, or post them in this thread
4- Tho, we generally should assume every universe is low 2-C, but when it fails the requirements or it broke some rules, it will get downgraded to 3-A or high 3-A