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

Optimization · Practiced Mastery
Co-op first-person zombie RPG about improvised weapons on a resort island.

Optimization · Practiced Mastery
The 1986 original that defined exploration-driven, secret-riddled platforming.
Dead Island leans Optimization (Practiced Mastery); Metroid leans Optimization (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Dead Island
first-person melee timing and stamina
Metroid
stiff NES jumps and tough enemy contact
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Dead Island
zombies are scripted swarms
Metroid
creatures follow fixed movement
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Dead Island
weapon drops and spawns add noise
Metroid
unmarked secrets and bombable blocks hide the map
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Dead Island
weapon mods and skill builds carry late game
Metroid
route and item knowledge transforms the game
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.