head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Optimization · Light / Casual
Hand-illustrated psychological horror about recurring nightmares, light on mechanics.

Optimization · Light / Casual
A gorgeous first-person mystery about piecing together a boy's disappearance.
Neverending Nightmares leans Optimization (Light / Casual); The Vanishing of Ethan Carter leans Optimization (Light / Casual).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Neverending Nightmares
Slow walking with rare evasion moments
The Vanishing of Ethan Carter
Walking and looking, nothing more
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Neverending Nightmares
Threats follow simple scripts
The Vanishing of Ethan Carter
No opponent
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Neverending Nightmares
Unknown branching until explored
The Vanishing of Ethan Carter
The mystery is hidden only until discovered
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Neverending Nightmares
Learning enemy routes through repeating nightmares
The Vanishing of Ethan Carter
Reconstructing event sequences is light deduction
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.