head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is optimization, and it is a single point.

Optimization · Pure Optimization
A supernatural teen drama where dialogue timing shapes relationships against a fixed mystery structure.

Optimization · Systems & Chaos
A visual novel first and a light tactics game second, heavy on story.
Oxenfree leans Optimization (Pure Optimization); Utawarerumono: Mask of Deception 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.
Oxenfree
Radio tuning and walking demand no physical skill
Utawarerumono: Mask of Deception
Optional timing presses on attacks
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Oxenfree
Supernatural narrative with scripted ghost behaviour
Utawarerumono: Mask of Deception
Enemy AI is scripted and predictable
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Oxenfree
Dialogue timing creates minor branching uncertainty
Utawarerumono: Mask of Deception
Light combat RNG in a mostly fixed story
Oxenfree leans a little harder on optimization, though the gap is small.
Oxenfree
Relationship and dialogue choices converge toward fixed endings
Utawarerumono: Mask of Deception
Easy SRPG battles solved with basic positioning
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.