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
A 2D sandbox of procedurally generated planets driven by crafting progression.

Optimization · Systems & Chaos
Community logistics and risk management against randomised zombie pressure.
Starbound leans Optimization (Pure Optimization); State of Decay 2: Juggernaut Edition leans Optimization (Systems & Chaos).
State of Decay 2: Juggernaut Edition leans a little harder on execution, though the gap is small.
Starbound
Light platforming and combat, generous margins
State of Decay 2: Juggernaut Edition
Combat is loose; positioning beats precision
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Starbound
Procedural NPCs follow simple fixed behaviours
State of Decay 2: Juggernaut Edition
Zombies swarm on script, never adapt
State of Decay 2: Juggernaut Edition leans a little harder on variance, though the gap is small.
Starbound
Procedural planets and loot keep early exploration unknown
State of Decay 2: Juggernaut Edition
Survivor traits, sieges and map events are randomised
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Starbound
Gear tiers, farming, and progression routes dominate
State of Decay 2: Juggernaut Edition
Base building, resource routing and risk management dominate
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.