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
The 2001 Civilization entry that introduced culture, strategic resources and refined empire micromanagement.

Optimization · Pure Optimization
Scheduling scarce time and resources across a base run by copies of yourself.
Sid Meier's Civilization III leans Optimization (Pure Optimization); The Alters leans Optimization (Pure Optimization).
The Alters leans a little harder on execution, though the gap is small.
Sid Meier's Civilization III
No dexterity in a turn-based interface
The Alters
Third-person walking and menus, no twitch demands
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Sid Meier's Civilization III
AI personalities are fixed and mappable
The Alters
No adaptive opponent, only systems and story beats
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Sid Meier's Civilization III
Random maps, resources and combat rolls matter early
The Alters
Unscouted events and alter reactions surprise first runs
Sid Meier's Civilization III leans a little harder on optimization, though the gap is small.
Sid Meier's Civilization III
Corruption math, worker turns and culture borders reward deep optimization
The Alters
Time, resource and crew scheduling under deadlines is the game
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.