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

Optimization · Practiced Mastery
A physics hide-and-seek testing systematic search efficiency room by room.
Dead Island leans Optimization (Practiced Mastery); Elebits leans Optimization (Practiced Mastery).
Dead Island leans a little harder on execution, though the gap is small.
Dead Island
first-person melee timing and stamina
Elebits
Pointer aiming and physics manipulation stay gentle
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
Elebits
Elebits scatter on simple scripts, not adaptation
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
Elebits
Hiding spots are unknown until rooms are torn apart
Dead Island leans a little harder on optimization, though the gap is small.
Dead Island
weapon mods and skill builds carry late game
Elebits
Efficient search order and power growth drive high scores
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.