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.

Execution · Practiced Mastery
First-person melee timing against scripted hordes, supported by a craftable weapon economy.

Execution · Practiced Mastery
First-person parkour against zombies, especially terrifying after dark.
Dead Island 2 leans Execution (Practiced Mastery); Dying Light leans Execution (Practiced Mastery).
Dying Light leans a little harder on execution, though the gap is small.
Dead Island 2
Melee timing, dodges and zombie crowd control need decent hands
Dying Light
Parkour traversal and melee timing demanding.
Dying Light leans a little harder on reads, though the gap is small.
Dead Island 2
Zombies follow scripted aggression patterns, never model you
Dying Light
Zombie AI scripted, non-adaptive.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Dead Island 2
Loot drops and zombie spawns add mild run-to-run noise
Dying Light
Night-hunter encounters bring randomness.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Dead Island 2
Weapon mods, skill cards and elemental matchups reward planning
Dying Light
Crafting, blueprints, skill trees 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.