head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Optimization · Practiced Mastery
A 1960s rural Japan horror entry pairing stamina-based melee with creeping floral body horror.

Optimization · Practiced Mastery
Methodically mapping a hostile station where knowledge and routing beat reflexes.
Silent Hill f leans Optimization (Practiced Mastery); System Shock leans Optimization (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Silent Hill f
Stamina-based melee with dodges demands real timing
System Shock
Combat and cyberspace ask competent but dated reflexes
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Silent Hill f
Monsters follow fixed attack patterns
System Shock
SHODAN's threats are scripted, not an adapting mind
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Silent Hill f
First-run layouts and shrine choices hide information
System Shock
Citadel's layout and logs are hidden until uncovered
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Silent Hill f
Resource economy and boss patterns converge with study
System Shock
Inventory, routing and station knowledge solve the game
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.