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.

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

Execution · Practiced Mastery
Gravity-shifting action adventure about falling sideways through a floating city.
Dead Island 2 leans Execution (Practiced Mastery); Gravity Rush 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 2
Melee timing, dodges and zombie crowd control need decent hands
Gravity Rush
Aerial gravity-kick aiming takes spatial control
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Dead Island 2
Zombies follow scripted aggression patterns, never model you
Gravity Rush
Nevi enemies are scripted
Dead Island 2 leans a little harder on variance, though the gap is small.
Dead Island 2
Loot drops and zombie spawns add mild run-to-run noise
Gravity Rush
Authored world, minimal randomness
Dead Island 2 leans a little harder on optimization, though the gap is small.
Dead Island 2
Weapon mods, skill cards and elemental matchups reward planning
Gravity Rush
Gem farming and upgrade priorities
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.