Sanctuary vs. Stronghold

Generally, I don't like playing as Sanctuary. The units are expensive and useless. They don't have a good racial ability either; Naga can't boast much. I also don't like Orcs – they're dumb meat grinders with low health. But I think in a fight, Orcs have a better chance against Naga because they at least have a lot of warriors. But Necropolis or Dungeon are completely different. When I play as them, I can easily defeat any Orc or Naga.