head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is reads, and it is a single point.

Optimization · Pure Optimization
A detective adventure about gathering clues to solve an authored murder case.

Optimization · Pure Optimization
A comedic point-and-click adventure of pirate puzzles with fixed solutions.
Agatha Christie: Hercule Poirot - The London Case leans Optimization (Pure Optimization); Escape from Monkey Island 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.
Agatha Christie: Hercule Poirot - The London Case
Point-and-click interaction needs no physical skill
Escape from Monkey Island
Pointing and walking only
Agatha Christie: Hercule Poirot - The London Case leans a little harder on reads, though the gap is small.
Agatha Christie: Hercule Poirot - The London Case
Suspects are scripted, not adapting to your deductions
Escape from Monkey Island
No opponent
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Agatha Christie: Hercule Poirot - The London Case
Clues hidden until found, but fully authored
Escape from Monkey Island
Puzzle solutions hidden until discovered
Escape from Monkey Island leans a little harder on optimization, though the gap is small.
Agatha Christie: Hercule Poirot - The London Case
Connecting evidence to solve the fixed case is the work
Escape from Monkey Island
Once known, every puzzle has one fixed answer
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
Agatha Christie: Hercule Poirot - The London Case →
full breakdown
Escape from Monkey Island →