Superman vs Goku: 20 pages of two grown men playing Tag. Eventually Batman and King Kai convince them to stop.
Superman vs Naruto: 30 pages of the deepest therapy you’ve ever read. Absolutely beautiful. Words cannot describe the healing.
Superman vs One-Punch Man: Just a bunch of 4-panel comics about the differences between Clark Kent’s Midwestern and Saitama’s Japanese hospitality. There is at least one section where both go into the same grocery store with the exact same grocery list, while the store is running low on stock.