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 creative vocabulary puzzle about conjuring the right object for each prompt.

Optimization · Pure Optimization
An open-ended needs-and-money system that rewards efficient scheduling.
Scribblenauts Unmasked: A DC Comics Adventure 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.
Scribblenauts Unmasked: A DC Comics Adventure
Typing words is the only physical act
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.
Scribblenauts Unmasked: A DC Comics Adventure
Puzzles are static prompts, no adversary
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.
Scribblenauts Unmasked: A DC Comics Adventure
Objectives are visible; little stays hidden
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.
Scribblenauts Unmasked: A DC Comics Adventure
Finding clever word-object solutions is the entire test
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.