head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is execution, and it is a single point.

Optimization · Pure Optimization
A turn-based 4X strategy game about optimizing civilization growth and tech trees over centuries.

Optimization · Pure Optimization
Grand strategy wargame mixing turn-based empire play with real-time battles.
Call to Power II leans Optimization (Pure Optimization); Medieval II: Total War leans Optimization (Pure Optimization).
Medieval II: Total War leans a little harder on execution, though the gap is small.
Call to Power II
none, purely turn-based decisions
Medieval II: Total War
real-time battle micro is modest
Call to Power II leans a little harder on reads, though the gap is small.
Call to Power II
limited prediction of AI civ behavior
Medieval II: Total War
campaign AI is exploitable and mappable
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Call to Power II
random events and combat outcome rolls
Medieval II: Total War
fog of war and event triggers hide some state
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Call to Power II
deep civilization-building and tech optimization
Medieval II: Total War
economy, unit counters, and campaign map strategy dominate
A matching score does not mean a matching test. Two games can both sit at 10 on execution and demand completely different things of you - which is why the reasoning above matters more than the number beside it.