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 · Pure Optimization
A chaotic comedy adventure whose elaborate multi-step puzzles test patience with absurd causal chains.

Optimization · Pure Optimization
A long parade of self-contained logic puzzles wrapped in a mystery story.
Deponia leans Optimization (Pure Optimization); Professor Layton and the Diabolical Box leans Optimization (Pure Optimization).
Deponia leans a little harder on execution, though the gap is small.
Deponia
Point-and-click with no timing elements
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.
Deponia
Comedy adventure with scripted characters throughout
Professor Layton and the Diabolical Box
No opponent; a parade of standalone brainteasers
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Deponia
Deterministic puzzle world with fixed solutions
Professor Layton and the Diabolical Box
Puzzles are fixed; only their first encounter surprises
Deponia leans a little harder on optimization, though the gap is small.
Deponia
Convoluted Rube Goldberg puzzle chains demand careful causal mapping
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.