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

Optimization · Pure Optimization
Optimizing regional economics and city services to sustain growth without collapsing your budget.

Optimization · Pure Optimization
Scheduling scarce time and resources across a base run by copies of yourself.
SimCity 4 leans Optimization (Pure Optimization); The Alters 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.
SimCity 4
Point-and-click placement; zero reflex requirement
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.
SimCity 4
Solo sandbox with no adversarial pressure
The Alters
No adaptive opponent, only systems and story beats
The Alters leans a little harder on variance, though the gap is small.
SimCity 4
Neighbor city interactions and demand curves add unpredictability
The Alters
Unscouted events and alter reactions surprise first runs
SimCity 4 leans a little harder on optimization, though the gap is small.
SimCity 4
Budget, ordinances, and transport networks are the core puzzle
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.