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

Optimization · Systems & Chaos
Managing layered survival systems - nutrition, disease, and shelter - in an unforgiving jungle.

Optimization · Systems & Chaos
Managing a survivor community's economy and risk under permadeath randomness.
Green Hell leans Optimization (Systems & Chaos); State of Decay 2 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.
Green Hell
Melee combat and trap placement demand moderate precision
State of Decay 2
Combat is forgiving; stealth and swings need modest timing
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Green Hell
Animal and tribal AI is scripted with fixed behaviour patterns
State of Decay 2
Zombies and hostile NPCs follow randomised scripts
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Green Hell
Disease, injury, and weather introduce layered randomness
State of Decay 2
Permadeath, infestations and survivor traits randomise each community
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Green Hell
Nutrition tracking, shelter design, and crafting order form a solvable loop
State of Decay 2
Base building, resource routing and survivor management drive 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.