head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is execution, and it is a single point.

Optimization · Light / Casual
A short visual-novel prequel testing little beyond attention to its story.

Optimization · Light / Casual
A gorgeous first-person mystery about piecing together a boy's disappearance.
Ghostwire: Tokyo - Prelude: The Corrupted Casefile leans Optimization (Light / Casual); The Vanishing of Ethan Carter leans Optimization (Light / Casual).
The Vanishing of Ethan Carter leans a little harder on execution, though the gap is small.
Ghostwire: Tokyo - Prelude: The Corrupted Casefile
Reading and choosing requires no dexterity
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.
Ghostwire: Tokyo - Prelude: The Corrupted Casefile
A fixed authored story, no adversary
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.
Ghostwire: Tokyo - Prelude: The Corrupted Casefile
Branch outcomes are hidden until first read
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.
Ghostwire: Tokyo - Prelude: The Corrupted Casefile
Minor choice-tracking, mostly linear
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.
full breakdown
Ghostwire: Tokyo - Prelude: The Corrupted Casefile →
full breakdown
The Vanishing of Ethan Carter →