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

Optimization · Pure Optimization
The 2002 Total War pairing turn-based medieval empire management with massive real-time battles.

Optimization · Pure Optimization
Grand strategy and line-infantry battles across the Napoleonic Wars.
Medieval: Total War leans Optimization (Pure Optimization); Napoleon: Total War leans Optimization (Pure Optimization).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Medieval: Total War
Real-time battle control rewards quick unit handling
Napoleon: Total War
Real-time battle micro under pressure
Napoleon: Total War leans a little harder on reads, though the gap is small.
Medieval: Total War
Multiplayer battles add human feints; campaign AI is scripted
Napoleon: Total War
Multiplayer battles involve feints; campaign AI is mappable
Medieval: Total War leans a little harder on variance, though the gap is small.
Medieval: Total War
Battle dice, loyalty and event cards add noise
Napoleon: Total War
Morale swings and fog of war
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Medieval: Total War
Campaign economy and battlefield doctrine are deeply learnable
Napoleon: Total War
Campaign economy, army composition, and line tactics
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.