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.

Variance · Light / Casual
A melancholic island stroll where the only mechanic is listening to the story unfold.

Optimization · Light / Casual
Tests nothing competitive - an authored interactive memoir to experience.
Dear Esther leans Variance (Light / Casual); If Found... 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.
Dear Esther
Walking is the only verb; no skill ceiling.
If Found...
Erasing pages takes no skill by design
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Dear Esther
No opponent of any kind.
If Found...
No opponent in a linear memoir
Dear Esther leans a little harder on variance, though the gap is small.
Dear Esther
Narration fragments are semi-randomised between playthroughs.
If Found...
Fully authored with nothing random
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Dear Esther
Nothing to solve; the island is the story.
If Found...
Nothing to solve - the story simply unfolds
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.