Nah scaling megaten cosmology with each other is absolute cancer, i don't think even atlus knows the multiverse of Megami tensei. Since megami tensei 3 the series has been treathed less like a multiverse with very clear conections but series which conections comes from the demons, some cosmology elements and overal themes. That is why things like mandala multiverse only get brougth out in a pseudo sequel. Because if you start cross scaling elements that were obviously supossed to stay in the respective series, then you get stupid things like every single character in last bible one shotting 99% of the megaten verse
I will say, this is just plain ignorant. The nukes were indirectly sent by YHVH himself through Thorman, who serves under him as Law-aligned Demon. It wouldn't make sense narratively if a staple of YHVH's plan blatantly would not work against the majority of his enemies. We have a Plot-Induced Stupidity page for a reason.
?????What? In what world does YHVH sending the nukes makes it able to kill a higher dimensional being makes any sense. Why nukes then? Aren't nukes fragile, easy to destroy in mid air or straigth up incontrolable, or just hope that radiation doesn't exist. Also he needed a bunch of ******* things to be able to "safely" flood the world(?). Also every saying that every demon has the same power is kinda dubios considering how 4 apocolypse rebooted, showing tha every entry on the series having very different cosmology that makes crosscaling demons kinda hard (Nocturne and V having mandala shenanigans, apocolypse having an entirelly diferent explanation on demons). ******* hell even Old persona and new persona have very clear distiction with how persona works