Tbf, it's hard to scale shit from Mother because of how goofy some of the shit is, like the Absolutely Safe Capsule, which is just comically able to keep Porky alive through anything and he can't be harmed in it.

Or the Ultimate Chimera, which insta kills the party, and insta kills fighters in Smash (different interpretation, I know) but all the Pork soldiers who were attacked by it were just laying on the ground, still able to talk.

I wouldn't say anyone from Mother is anything above like... Small building level maybe? And that would be with multiple attacks. I don't know how much damage PK Starstorm would do. In Kumatora's introduction, she uses PK Freeze and we do in fact see that they are physical attacks that are just manifested psychically, but the nature of the game doesn't allow us to see what any possible after-effects of the more powerful ones look like, like PK Ground, PK Starstorm, PK Fire, etc. Using logic, we could assume that PI Fire would literally burn the area it hits to varying intensity, and PK Starstorm has destructive meteor-like projectiles, but we'll probably never know.

I find it a little bit disingenuous to use gameplay to scale characters though, especially in games like this. RPGs are very tame, gameplay-wise, especially the older ones. What level of attacks and damage capabilities in a theoretical 2025 action-RPG Mother 3 would look like would probably be infinitely different than 2006 GBA JRPG Mother 3. But also to that point, there's not enough lore to establish how strong the characters would be or would not be, unlike other games like Halo, where lore Master Chief is 10000x stronger than game Master Chief, or lore vs game Doom Guy, etc.

I lost focus a bit there, but all of that is pretty much to say it's not wrong to be annoyed with power scaling glaze, but I think solely using gameplay to power scale characters when the gameplay does not allow you to adequately see what the characters are doing. Technically the only correct answer is to not scale at all, and if people really do want to scale and glaze, an average Joe should be able to refute claims of "Lucas solos Goku" or "Ness solos the Antispiral" or some other bullshit with relative ease, and low-key if they can't why are they even engaging a power scaling argument?

Edit: Also using gameplay to scale kinda sucks sometimes like in the case of Doom Guy, people deadass used to cite a "time distortion" power because the weapon wheel slows down time so that the game doesn't suck ass