head to head
Neither is simply harder - they are hard in different places. L.A. Noire demands more execution; Marble Racing Manager demands more variance.

Optimization · Systems & Chaos
1940s detective procedural built around crime scenes and reading scripted interrogation tells.

Variance · Systems & Chaos
An idle collection loop where random races generate progress with minimal decisions.
L.A. Noire leans Optimization (Systems & Chaos); Marble Racing Manager leans Variance (Systems & Chaos).
L.A. Noire leans clearly harder on execution.
L.A. Noire
Light shooting and driving, very forgiving
Marble Racing Manager
Races run automatically with no player input
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
L.A. Noire
Suspects follow fixed scripts, never adapt
Marble Racing Manager
No adaptive opponents - races are simulated RNG
Marble Racing Manager leans clearly harder on variance.
L.A. Noire
Interrogation tells and clues hidden until discovered
Marble Racing Manager
Race outcomes are random rolls you cannot influence directly
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
L.A. Noire
Evidence chains and question choices have fixed correct answers
Marble Racing Manager
Marble collection and tray choices are the only lever
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.