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
Grand strategy and line-infantry battles across the Napoleonic Wars.

Optimization · Pure Optimization
A Dungeon Keeper successor about building an evil lair and crushing do-gooders.
Napoleon: Total War leans Optimization (Pure Optimization); War for the Overworld leans Optimization (Pure Optimization).
Napoleon: Total War leans a little harder on execution, though the gap is small.
Napoleon: Total War
Real-time battle micro under pressure
War for the Overworld
Mouse-driven dungeon management; light APM demand
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Napoleon: Total War
Multiplayer battles involve feints; campaign AI is mappable
War for the Overworld
Skirmish humans adapt; campaign AI is scripted
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Napoleon: Total War
Morale swings and fog of war
War for the Overworld
Enemy dungeon layout hidden until scouted
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Napoleon: Total War
Campaign economy, army composition, and line tactics
War for the Overworld
Room economy, minion synergy, and build order 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.