head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is variance, and it is a single point.

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

Optimization · Practiced Mastery
A cult action RPG about climbing giant monsters with AI pawns.
Dead Island leans Optimization (Practiced Mastery); Dragon's Dogma 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
Dragon's Dogma
Climbing monsters and timing skills by hand
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
Dragon's Dogma
Pawns and monsters run fixed logic
Dead Island leans a little harder on variance, though the gap is small.
Dead Island
weapon drops and spawns add noise
Dragon's Dogma
Night dangers and loot unknown early
Dragon's Dogma leans a little harder on optimization, though the gap is small.
Dead Island
weapon mods and skill builds carry late game
Dragon's Dogma
Vocations, pawn setups, and augments run deep
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.