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

Optimization · Systems & Chaos
Tests attentive reading and interrogation-line selection in a noir mystery.

Optimization · Pure Optimization
Telltale's episodic comedy adventure sending Guybrush Threepwood after a pox plaguing the Caribbean.
Chicken Police leans Optimization (Systems & Chaos); Tales of 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.
Chicken Police
Point-and-click interrogation needs no dexterity
Tales of Monkey Island
Click-driven; no physical demands.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Chicken Police
Suspects are authored characters with fixed responses
Tales of Monkey Island
LeChuck and pirates are pure script.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Chicken Police
Case details are hidden until interrogated out
Tales of Monkey Island
Modern design telegraphs most puzzle information.
Tales of Monkey Island leans a little harder on optimization, though the gap is small.
Chicken Police
Picking correct interrogation lines is a solvable puzzle
Tales of Monkey Island
Episodic inventory puzzles each have one intended solution.
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.