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.

Optimization · Light / Casual
An atmospheric narrative theatre piece where engagement is interpretive rather than problem-solving.

Variance · Light / Casual
An exploration of narrative branches that deliberately tests nothing.
Kentucky Route Zero leans Optimization (Light / Casual); The Stanley Parable leans Variance (Light / Casual).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Kentucky Route Zero
Player input amounts to clicking and dialogue selection only
The Stanley Parable
Walking is the only input
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Kentucky Route Zero
No opponent; choices shape tone not outcomes
The Stanley Parable
The narrator is a script, however much he pretends otherwise
The Stanley Parable leans a little harder on variance, though the gap is small.
Kentucky Route Zero
Negligible randomness; the world is a fixed authored space
The Stanley Parable
Endings are hidden information until you wander into them
Kentucky Route Zero leans a little harder on optimization, though the gap is small.
Kentucky Route Zero
There is no puzzle layer; the game resists solvability by design
The Stanley Parable
Finding all branches is a trivial checklist
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.