Here "land of Sodom" refer to the people who lived there. Alternate translation: "God will show more mercy to the people of Sodom in the day of judgment than to you" or "God will punish you more severely in the day of judgment than the people of Sodom" (See: [[rc://en/ta/man/translate/figs-metonymy]])
The implicit information can be made explicit. Alternate translation: "than for you, because you did not repent and believe in me, even though you saw me do miracles" (See: [[rc://en/ta/man/translate/figs-explicit]])