East 616 wins
That said, it really comes down to Batman who laughs. He is like a plot device for taking down enemies who should not lose. He out-preps Batman.
All the other dark knights can and should be defeated.
Nth metal might not exist in marvel but in a forum march, they should have access to it. Otherwise, we can just argue that Barbatos can’t crossover since there is no Bruce Wayne in earth 616