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
Sci-fi thriller played as the station AI solving its own crisis.

Optimization · Pure Optimization
An open-ended needs-and-money system that rewards efficient scheduling.
Observation leans Optimization (Pure Optimization); The Sims leans Optimization (Pure Optimization).
Observation leans a little harder on execution, though the gap is small.
Observation
Camera control and interface manipulation
The Sims
Clicking menus has no physical ceiling
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Observation
Events are fully authored
The Sims
Sims run need-driven scripts, not minds
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Observation
Mystery unknown until uncovered
The Sims
Event rolls add flavour, all quickly mapped
The Sims leans a little harder on optimization, though the gap is small.
Observation
Systems puzzles and station schematics solving
The Sims
Need scheduling, career grinding and money loops are solvable
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.