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 · Systems & Chaos
A first-person driving survival game through a haunted exclusion zone.

Optimization · Pure Optimization
A zombie survival sim where long-term planning outweighs moment-to-moment skill.
Pacific Drive leans Optimization (Systems & Chaos); Project Zomboid leans Optimization (Pure Optimization).
Pacific Drive leans a little harder on execution, though the gap is small.
Pacific Drive
Driving and quick repairs matter.
Project Zomboid
Combat is deliberate; precision matters but is slow.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Pacific Drive
Anomalies are scripted hazards.
Project Zomboid
Zombies follow scripted behaviour; no adaptation.
Pacific Drive leans a little harder on variance, though the gap is small.
Pacific Drive
Zone layouts and storms randomize.
Project Zomboid
Loot spawns and zombie distributions randomized.
Project Zomboid leans a little harder on optimization, though the gap is small.
Pacific Drive
Car upgrades and run prep reward planning.
Project Zomboid
Skill grinding, base setup, and routing define survival.
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.