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.

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

Execution · Practiced Mastery
Brawler combo execution against scripted bosses with light build tuning.
Dead Island 2 leans Execution (Practiced Mastery); Teenage Mutant Ninja Turtles: Mutants in Manhattan leans Execution (Practiced Mastery).
Teenage Mutant Ninja Turtles: Mutants in Manhattan leans a little harder on execution, though the gap is small.
Dead Island 2
Melee timing, dodges and zombie crowd control need decent hands
Teenage Mutant Ninja Turtles: Mutants in Manhattan
Combo timing, dodges and turtle-swaps carry the combat
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
Teenage Mutant Ninja Turtles: Mutants in Manhattan
Bosses telegraph scripted patterns, nothing adapts
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Dead Island 2
Loot drops and zombie spawns add mild run-to-run noise
Teenage Mutant Ninja Turtles: Mutants in Manhattan
Mission modifiers shuffle encounters mildly
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
Teenage Mutant Ninja Turtles: Mutants in Manhattan
Charm builds and combo knowledge raise rank ceilings
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.