Necropolis or Castle (Which one is stronger?)

This is a very vague question. The answer will also vary depending on the map and the rules used. Currently, on random maps, players mostly play with a ban on vampire upgrades, necromancy enhancements, and undead alliance gathering. Sometimes, they also play with a random starting hero. On custom maps, which are mainly used here, Necropolis is noticeably stronger than Castle. However, for example, on a map like Jebus, where a tournament is currently being held, Necropolis is a terrible faction. Castle, on the other hand, is one of the top factions.
If I had to choose an opponent against Necropolis on a custom map, I would prefer Rampart. Elves have a very good chance of defeating Necropolis (if Necropolis has a blue color).