>And no, you're wrong. The GoDs don't need to be 2-C because both Champa and Beerus were destroying the universes together, sharing the burdern, and the effect wasn't instantanous - it was taking its time to just reach Goku and Vegeta who were of the other room they were in, let alone two entire universes.
...Your missing my entire point here.
If Beerus and Champa were going to destroy U6 and U7 with non space-time level attacks, then that means the universes in DBS share the same space-time instead of being in their own individual space-times. But if they were going to destroy U6 and U7 with space-time level attacks, then that means they likely need to be upgraded to 2-C for breeching into seperate space-time continuums.
You cannot have a 3-A level attack breech into other universes unless they reside in the same space-time continuum as the universe you are destroying. Despite this, we currently apply both lines of logic to DBS. We currently treat what Beerus and Champa were going to do to their universes as nothing more than 3-A feats, yet at the same time, we currently treat the universes in the verse as having their own space-time continuums. And that together makes absolutely no sense as its contradictory, so one or the other is wrong.