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
A knowledge-based mystery solved by mapping a deterministic solar system.

Optimization · Pure Optimization
A first-person factory builder that is pure logistics optimization.
Outer Wilds leans Optimization (Pure Optimization); Satisfactory leans Optimization (Pure Optimization).
Outer Wilds leans a little harder on execution, though the gap is small.
Outer Wilds
Light piloting, mostly forgiving
Satisfactory
Light platforming, no real mechanical ceiling.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Outer Wilds
World is fixed; nothing adapts to you
Satisfactory
No adaptive opponent in the world.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Outer Wilds
Loop is deterministic once understood
Satisfactory
Resource nodes are fixed once mapped.
Satisfactory leans a little harder on optimization, though the gap is small.
Outer Wilds
Pure knowledge puzzle - solve the system
Satisfactory
Ratios, logistics, and factory layout are everything.
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.