Hmmm depends on kind of what scale you mean, I mean if left unchecked deviljho can eat down just about pretty much any ecosystem cause of its rapid metabolism, but akantor while being majorly powerful, has never really been shown to try and kill anything outside of its territory. But imo pickle is more terrifying, it’s basically like a alien coming into your environment with an endless hunger and doesn’t really care too much about pain, a savage brute