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
The archetypal idle game where optimal purchase order is the entire skill.

Optimization · Pure Optimization
Gentleman puzzler solves a village full of standalone brainteasers.
Cookie Clicker leans Optimization (Pure Optimization); Professor Layton and the Curious Village leans Optimization (Pure Optimization).
Professor Layton and the Curious Village leans a little harder on execution, though the gap is small.
Cookie Clicker
Clicking is optional past the early game
Professor Layton and the Curious Village
Stylus taps only; no dexterity pressure at all
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Cookie Clicker
No opponent
Professor Layton and the Curious Village
No opponent, adaptive or otherwise
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Cookie Clicker
Golden cookie timing randomness
Professor Layton and the Curious Village
Puzzle answers are hidden until reasoned out, then fixed
Cookie Clicker leans a little harder on optimization, though the gap is small.
Cookie Clicker
Purchase order and ascension math are the game
Professor Layton and the Curious Village
Every brainteaser has one clean solvable 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.