head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Optimization · Pure Optimization
A gentle narrative game about repairing keepsakes for the people of a small town.

Optimization · Pure Optimization
An open-ended needs-and-money system that rewards efficient scheduling.
Assemble with Care leans Optimization (Pure Optimization); The Sims 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.
Assemble with Care
Careful but forgiving object 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.
Assemble with Care
Pure narrative; nobody opposes you.
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.
Assemble with Care
Object internals unknown until opened; quickly mapped.
The Sims
Event rolls add flavour, all quickly mapped
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Assemble with Care
Disassembly and repair follow fixed, learnable steps.
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.