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
Solving a civilisation-scale resource and governance puzzle before an ecological deadline.

Optimization · Pure Optimization
Grand strategy wargame mixing turn-based empire play with real-time battles.
Eco 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.
Eco
No twitch element; all actions are build and craft clicks
Medieval II: Total War
real-time battle micro is modest
Eco leans a little harder on reads, though the gap is small.
Eco
Other players add mild human negotiation reads in multiplayer
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.
Eco
Meteor timer and ecosystem variables carry some hidden uncertainty
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.
Eco
Government systems, specialisation routing, and ecosystem management are richly solvable
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.