head to head
Fallout: New Vegas asks more than Call to Power II, and the gap is execution.

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

Optimization · Pure Optimization
A faction-driven RPG-shooter where build and route planning shape every ending.
Call to Power II leans Optimization (Pure Optimization); Fallout: New Vegas leans Optimization (Pure Optimization).
Fallout: New Vegas leans clearly harder on execution.
Call to Power II
none, purely turn-based decisions
Fallout: New Vegas
Shooter inputs with VATS assist
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
Fallout: New Vegas
Scripted factions and enemies
Call to Power II leans a little harder on variance, though the gap is small.
Call to Power II
random events and combat outcome rolls
Fallout: New Vegas
Some loot and crit RNG
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
Fallout: New Vegas
Faction routing, perks, builds heavily rewarded
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.