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 psychological horror RPG where a shut-in's dream world slowly cracks around a buried truth.

Optimization · Pure Optimization
A supernatural teen drama where dialogue timing shapes relationships against a fixed mystery structure.
Omori leans Optimization (Pure Optimization); Oxenfree 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.
Omori
Turn-based menus, no dexterity needed
Oxenfree
Radio tuning and walking demand no physical skill
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Omori
Scripted encounters throughout
Oxenfree
Supernatural narrative with scripted ghost behaviour
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Omori
Minor drop and emotion randomness
Oxenfree
Dialogue timing creates minor branching uncertainty
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Omori
Emotion triangle and follow-ups are easily solvable
Oxenfree
Relationship and dialogue choices converge toward fixed endings
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.