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
A branching thriller novel that tests attention to its story, not skill.

Optimization · Light / Casual
A meta-narrative walking sim about defying or obeying a scripted narrator.
The Devil on G-String leans Optimization (Light / Casual); The Stanley Parable: Ultra Deluxe 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.
The Devil on G-String
Reading and clicking choices takes no skill
The Stanley Parable: Ultra Deluxe
Walking and clicking, no mechanical demand.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
The Devil on G-String
No opponent - the thriller plot is fixed
The Stanley Parable: Ultra Deluxe
Narrator is scripted, not adaptive.
The Devil on G-String leans a little harder on variance, though the gap is small.
The Devil on G-String
Branch outcomes are hidden until a route is read
The Stanley Parable: Ultra Deluxe
Hidden endings to discover.
The Devil on G-String leans a little harder on optimization, though the gap is small.
The Devil on G-String
Finding the right choices for each route is light puzzle work
The Stanley Parable: Ultra Deluxe
Mapping ending tree rewards completionists.
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.