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.

Execution · Practiced Mastery
Movie tie-in action game following Niobe and Ghost through bullet-time brawls and chases.
Dead Island leans Optimization (Practiced Mastery); Enter the Matrix leans Execution (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
Enter the Matrix
Bullet-time gunplay and kung-fu combos
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
Enter the Matrix
Agents and SWAT run fixed scripts
Dead Island leans a little harder on variance, though the gap is small.
Dead Island
weapon drops and spawns add noise
Enter the Matrix
Encounter placement unknown first run
Dead Island leans a little harder on optimization, though the gap is small.
Dead Island
weapon mods and skill builds carry late game
Enter the Matrix
Focus meter management and learned level layouts
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.