head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is variance, and it is a single point.

Optimization · Pure Optimization
A subversive JRPG where understanding rolling HP mechanics and PSI optimization defeats its quirky scripted encounters.

Optimization · Systems & Chaos
Frictional's defenseless first-person horror where you solve physics puzzles while hiding from the infected.
EarthBound leans Optimization (Pure Optimization); Penumbra: Black Plague leans Optimization (Systems & Chaos).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
EarthBound
Rolling HP meter has very mild timing implication
Penumbra: Black Plague
Physics-grab interactions need only basic mouse control
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
EarthBound
All enemies scripted with fixed attack patterns
Penumbra: Black Plague
Infected patrol on scripts; hiding beats them every time
Penumbra: Black Plague leans a little harder on variance, though the gap is small.
EarthBound
PSI randomness, enemy attack variety, and encounter triggers add unpredictability
Penumbra: Black Plague
Unknown layouts, scares, and patrols on a blind run
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
EarthBound
Status effects, rolling HP strategy, and Franklin Badge usage are solvable
Penumbra: Black Plague
Physics puzzles and evasion routes are fully solvable
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.