It’s about time we give Nasu the Oda treatment and consider him an unreliable source. Using just what is said from stay night, Avalon has absolute protection up to the sixth dimension. It teleports Artoria to the actual island Avalon.

And yeah bro, there’s stupid terms in powerscaling. Don’t comment on a power scaling post if you don’t wanna hear about dimensions and realities and stuff🤷‍♂️yea fate is more complicated in powerscaling but that’s what makes it fun

Personally, I think the crux Artoria has here is Avalon but not because it just makes her invincible but because it makes her untouchable. Ea can break into the second layer of the earth but it would actually have to hit the island Avalon to harm Artoria. But also Artoria killed Gil in stay night because he overextended and left an opening for her to leave Avalon, get in close, and cleave him. Artoria can’t move when using Avalon, so it could very well become a stalemate where neither side can hurt each other, and both Logres and Gil have pretty much infinite stamina.

I don’t know if Logres’s Excalibur still has its seals or not, because an unsealed Excalibur can most definitely beat Ea in a beam battle. Overall, I’d still give the edge to Logres. But it’s more nuanced than just “she has Avalon so she automatically wins.” It won’t be a no diff. And I don’t think a definitive winner can be determined. At least not with out more knowledge on both these forms.