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
Cozy space exploration and base-building sandbox.

Optimization · Pure Optimization
An economy and layout optimization puzzle about keeping a small simulated city solvent.
Astroneer leans Optimization (Pure Optimization); SimCity leans Optimization (Pure Optimization).
Astroneer leans a little harder on execution, though the gap is small.
Astroneer
Light terrain tool inputs
SimCity
Pause-friendly building removes any physical test
SimCity leans a little harder on reads, though the gap is small.
Astroneer
No adaptive opponents
SimCity
Region multiplayer is cooperative, not adversarial prediction
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Astroneer
Planet resource distribution
SimCity
Disasters and agent simulation quirks add mild randomness
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Astroneer
Base layout, power chains, automation
SimCity
Zoning, traffic flow and specialisation economies are the whole 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.