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 forensic point-and-click about collecting evidence and matching it to scripted suspects.

Optimization · Pure Optimization
Gentleman puzzler solves a village full of standalone brainteasers.
CSI: Deadly Intent leans Optimization (Pure Optimization); Professor Layton and the Curious Village 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.
CSI: Deadly Intent
Pointing and clicking, no twitch demand
Professor Layton and the Curious Village
Stylus taps only; no dexterity pressure at all
CSI: Deadly Intent leans a little harder on reads, though the gap is small.
CSI: Deadly Intent
Suspects give scripted responses, not adapting
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.
CSI: Deadly Intent
Evidence locations unknown until scenes are searched
Professor Layton and the Curious Village
Puzzle answers are hidden until reasoned out, then fixed
Professor Layton and the Curious Village leans a little harder on optimization, though the gap is small.
CSI: Deadly Intent
Collecting and matching evidence to suspects solves cases
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.