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
The Game Boy Advance remake of the original Kanto journey with modern mechanics and the Sevii Islands.
Call to Power II leans Optimization (Pure Optimization); Pokemon FireRed Version leans Optimization (Pure Optimization).
Call to Power II leans a little harder on execution, though the gap is small.
Call to Power II
none, purely turn-based decisions
Pokemon FireRed Version
Turn-based menus only
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Call to Power II
limited prediction of AI civ behavior
Pokemon FireRed Version
AI trainers follow fixed logic; PvP optional
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
Pokemon FireRed Version
Wild encounters and catch rolls bring luck
Call to Power II leans a little harder on optimization, though the gap is small.
Call to Power II
deep civilization-building and tech optimization
Pokemon FireRed Version
Team composition and matchup knowledge decide everything
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.