head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Execution · Practiced Mastery
An action adventure rewarding combat timing against scripted boss patterns.

Execution · Practiced Mastery
The saga's flashy conclusion sending Sora through Pixar and Disney worlds toward the Keyblade War.
God of War Ragnarok leans Execution (Practiced Mastery); Kingdom Hearts III 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.
God of War Ragnarok
Parry timing and combo execution in combat
Kingdom Hearts III
Limit Cut bosses require sharp reactions
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
God of War Ragnarok
Bosses use fixed movesets
Kingdom Hearts III
All opposition is scripted spectacle
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
God of War Ragnarok
Negligible randomness
Kingdom Hearts III
Minimal hidden systems
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
God of War Ragnarok
Build choices and moveset mastery solve bosses
Kingdom Hearts III
Attraction commands or boss study both solvable
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.