I'm trying to have a rough idea of a potential attack potency from a TRPG (Anima Beyond Fantasy), in said rpg when two beings fight each other at high levels (Base ability 400 ), they create enormous craters, destroy any building/construction that aren't supernaturally resistant as a side effect of their clash and anybody hundreds of feet in the area could possibly receive random attacks/die from just the clash/impact.

It's just to satisfy my own curiosity, but I understand if it isn't enough details to estimate something.

Again, this is just the side effect of their clash, not even their own attacks/abilities but I'm not good at these kinds of calcs/maths.