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 branching chat story that tests curiosity about outcomes, not skill.

Optimization · Light / Casual
A gorgeous first-person mystery about piecing together a boy's disappearance.
Emily Is Away Too leans Variance (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.
Emily Is Away Too
Typing in a fake chat client takes no skill
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.
Emily Is Away Too
Characters follow branching scripts, not adaptive minds
The Vanishing of Ethan Carter
No opponent
Emily Is Away Too leans a little harder on variance, though the gap is small.
Emily Is Away Too
Branch outcomes are hidden until a route is played
The Vanishing of Ethan Carter
The mystery is hidden only until discovered
The Vanishing of Ethan Carter leans a little harder on optimization, though the gap is small.
Emily Is Away Too
Mapping dialogue branches is the only system
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.