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

Optimization · Pure Optimization
A time-loop mystery puzzle game that is essentially a fixed sequence to solve.
Outer Wilds leans Optimization (Pure Optimization); The Sexy Brutale 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.
Outer Wilds
Light piloting, mostly forgiving
The Sexy Brutale
light stealth timing, mostly observation-based
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
The Sexy Brutale
NPCs loop on fixed deterministic schedules
Outer Wilds leans a little harder on variance, though the gap is small.
Outer Wilds
Loop is deterministic once understood
The Sexy Brutale
fully deterministic time-loop world
Outer Wilds leans a little harder on optimization, though the gap is small.
Outer Wilds
Pure knowledge puzzle - solve the system
The Sexy Brutale
solving the fixed time-loop puzzle sequence
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.