Talk:Arceus vs Omnimon/@comment-30408599-20170128173607/@comment-26418719-20170219165447

It's mostly by compositing what they did in the games and what they did in the anime. Given how Dialga and Palkia are capable of putting out enough energy to create galaxies, it's fully likely that their full power attacks like Roar of Time and Spacial Rend are at this level too. Giratina is ALSO capable of fighting at such a level.