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
Squad composition and map routing optimisation under gacha-gated resources.

Optimization · Pure Optimization
A zombie survival sim where long-term planning outweighs moment-to-moment skill.
Girls' Frontline leans Optimization (Systems & Chaos); Project Zomboid leans Optimization (Pure Optimization).
Project Zomboid leans a little harder on execution, though the gap is small.
Girls' Frontline
Manual skill timing matters occasionally; battles mostly auto-resolve
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.
Girls' Frontline
Enemy echelons follow fixed map logic
Project Zomboid
Zombies follow scripted behaviour; no adaptation.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Girls' Frontline
Gacha production and drop rates gate the roster
Project Zomboid
Loot spawns and zombie distributions randomized.
Project Zomboid leans a little harder on optimization, though the gap is small.
Girls' Frontline
Formation building and map routing is the real game
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.