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.

Execution · Practiced Mastery
Linear postwar crime story driven by cover shootouts and atmosphere.

Execution · Practiced Mastery
An open-world cop action game mixing driving, gunplay, and martial arts across a mapped Los Angeles.
Mafia II leans Execution (Practiced Mastery); True Crime: Streets of LA leans Execution (Practiced Mastery).
True Crime: Streets of LA leans a little harder on execution, though the gap is small.
Mafia II
Cover shooting and fistfight timing
True Crime: Streets of LA
Driving, shooting, and brawling reflexes
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Mafia II
Enemies are scripted
True Crime: Streets of LA
AI cops and crooks are scripted
True Crime: Streets of LA leans a little harder on variance, though the gap is small.
Mafia II
Story missions are fixed
True Crime: Streets of LA
Random street crimes pop up
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Mafia II
Modest; learning encounter layouts
True Crime: Streets of LA
Branching missions and upgrade routes learnable
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.