Which faction is stronger, or a template for comparing cities based on their strength!

For me, the Tower faction is the best! The middle-tier archers are mages (a standard, decent unit), and the first level upgrade allows you to get by without losses in the early game, plus, of course, the Titans have incredible ranged attacks after upgrading. The faction itself specializes in magic. You level up their elemental magic skills as much as possible, and you become quite powerful... The Naga gets Blessed, gets Stone Skin, gets Haste, and becomes an unstoppable force! You collect artifacts that boost mana and magic power...
In general, the game is designed so that there is a counter for every faction!