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
Iterating cause-and-effect sequences to untangle a fixed narrative puzzle.

Optimization · Pure Optimization
A psychological horror RPG where a shut-in's dream world slowly cracks around a buried truth.
Last Day of June leans Optimization (Pure Optimization); Omori 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.
Last Day of June
Slow walking and simple interactions, no dexterity
Omori
Turn-based menus, no dexterity needed
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Last Day of June
No opponent - a fixed narrative system
Omori
Scripted encounters throughout
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Last Day of June
Consequences of changes are hidden until tried
Omori
Minor drop and emotion randomness
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Last Day of June
Sequencing the four characters' actions is the puzzle
Omori
Emotion triangle and follow-ups are easily 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.