In traditional Norse mythology, Loki isn't typically referred to as the God of Stories. However, in some modern reimaginings or fictional universes, this title might be given to him for his complex and manipulative nature that often leads to interesting storylines.
One of the best is 'The Dark Knight Returns'. In this story, an older Batman comes out of retirement and clashes with Superman who is sort of a government enforcer. It shows their ideological differences and the grittiness of the Dark Knight against the more 'establishment' Superman.
One of the best is 'Final Crisis'. In this story, Darkseid's plan to reshape reality is opposed by Superman. It shows Superman's unwavering will against Darkseid's tyranny. Another great one is 'Superman: The Darkseid War'. It features an epic battle between them with high - stakes and amazing power displays.
One of the great ones is 'Action Comics #489 - 491'. In these issues, Superman faces off against Metallo in a really intense battle. The story shows Metallo's kryptonite - powered strength as a major threat to Superman.