Read what I quoted as well. It's a good example that's widely used in many games.You are assuming you know exactly the point values of these moves, and that there are no other rules to the game which might change the outcome. Dont be silly, this is a terrible example, and in no way shape or form could a game like Civ V ever be put into such simplistic terms.
Every single game has simple parts just like every single number is a composite of primes.