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
An economy and layout optimization puzzle about keeping a small simulated city solvent.

Optimization · Pure Optimization
A farm-life sim solved by season routing and profit optimization.
SimCity leans Optimization (Pure Optimization); Stardew Valley 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
Pause-friendly building removes any physical test
Stardew Valley
Trivial timing on fishing and combat
SimCity leans a little harder on reads, though the gap is small.
SimCity
Region multiplayer is cooperative, not adversarial prediction
Stardew Valley
No adaptive opponent exists
Stardew Valley leans a little harder on variance, though the gap is small.
SimCity
Disasters and agent simulation quirks add mild randomness
Stardew Valley
Crop luck and geode RNG matter modestly
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
SimCity
Zoning, traffic flow and specialisation economies are the whole game
Stardew Valley
Routing seasons, profit loops, and bundles dominates
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.