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 · Pure Optimization
Cyberpunk point-and-click adventure through a dystopian Australian mega-city.

Optimization · Pure Optimization
A long parade of self-contained logic puzzles wrapped in a mystery story.
Beneath a Steel Sky leans Optimization (Pure Optimization); Professor Layton and the Diabolical Box leans Optimization (Pure Optimization).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Beneath a Steel Sky
Point-and-click; no dexterity required
Professor Layton and the Diabolical Box
Stylus taps - zero dexterity demand
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Beneath a Steel Sky
No opponent; scripted characters
Professor Layton and the Diabolical Box
No opponent; a parade of standalone brainteasers
Beneath a Steel Sky leans a little harder on variance, though the gap is small.
Beneath a Steel Sky
First-run puzzle surprises only
Professor Layton and the Diabolical Box
Puzzles are fixed; only their first encounter surprises
Professor Layton and the Diabolical Box leans a little harder on optimization, though the gap is small.
Beneath a Steel Sky
Inventory puzzle chains are fully solvable
Professor Layton and the Diabolical Box
Each brainteaser has one clean logical solution to find
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.