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
A classic point-and-click adventure that's a fixed set of logic puzzles to solve.

Optimization · Pure Optimization
A long parade of self-contained logic puzzles wrapped in a mystery story.
Monkey Island 2 Special Edition: LeChuck's Revenge 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.
Monkey Island 2 Special Edition: LeChuck's Revenge
no reflex demand, point-and-click only
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.
Monkey Island 2 Special Edition: LeChuck's Revenge
no opposing agent to out-think
Professor Layton and the Diabolical Box
No opponent; a parade of standalone brainteasers
Professor Layton and the Diabolical Box leans a little harder on variance, though the gap is small.
Monkey Island 2 Special Edition: LeChuck's Revenge
deterministic puzzle solutions
Professor Layton and the Diabolical Box
Puzzles are fixed; only their first encounter surprises
Monkey Island 2 Special Edition: LeChuck's Revenge leans a little harder on optimization, though the gap is small.
Monkey Island 2 Special Edition: LeChuck's Revenge
inventory logic puzzles 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.
full breakdown
Monkey Island 2 Special Edition: LeChuck's Revenge →
full breakdown
Professor Layton and the Diabolical Box →