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
Dystopian management adventure about a landlord spying on tenants for a totalitarian state.

Optimization · Systems & Chaos
An inspection-procedure test of judging hidden infections under base-building pressure.
Beholder leans Optimization (Pure Optimization); Quarantine Zone: The Last Check leans Optimization (Systems & Chaos).
Quarantine Zone: The Last Check leans a little harder on execution, though the gap is small.
Beholder
Simple point-and-click landlord actions
Quarantine Zone: The Last Check
Inspecting survivors and managing defenses needs no dexterity
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Beholder
Tenants follow scripted schedules, not adaptive
Quarantine Zone: The Last Check
Survivors are generated cases, not adapting deceivers
Quarantine Zone: The Last Check leans a little harder on variance, though the gap is small.
Beholder
Tenant events and directives surprise first runs
Quarantine Zone: The Last Check
Each arrival's infection status is hidden until inspected
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Beholder
Money, time, and blackmail decision routing
Quarantine Zone: The Last Check
Mastering inspection rules and base economy converges to procedure
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.