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
An open-ended needs-and-money system that rewards efficient scheduling.

Optimization · Systems & Chaos
A time-travel mystery testing deduction of fixed cause-and-effect puzzle chains.
The Sims leans Optimization (Pure Optimization); Time Hollow leans Optimization (Systems & Chaos).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
The Sims
Clicking menus has no physical ceiling
Time Hollow
Drawing portals with the stylus is trivial
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
The Sims
Sims run need-driven scripts, not minds
Time Hollow
A fixed mystery plot, no adversary
Time Hollow leans a little harder on variance, though the gap is small.
The Sims
Event rolls add flavour, all quickly mapped
Time Hollow
Story twists are hidden information on first play
The Sims leans a little harder on optimization, though the gap is small.
The Sims
Need scheduling, career grinding and money loops are solvable
Time Hollow
Deducing where and when to open portals is fixed-solution puzzling
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.