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

Execution · Pure Mechanics
Spectacle hack-and-slash where reflexes and combo flow drive every fight.

Execution · Pure Mechanics
A precision-platforming metroidvania built around fluid traversal.
God of War III leans Execution (Pure Mechanics); Ori and the Blind Forest leans Execution (Pure Mechanics).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
God of War III
Combo execution and QTE timing carry combat.
Ori and the Blind Forest
Precise platforming and bash-chain escape sequences
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
God of War III
Bosses fully scripted spectacle.
Ori and the Blind Forest
Scripted enemies, no adaptive opponent
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
God of War III
Almost no randomness.
Ori and the Blind Forest
Fixed layouts, minimal randomness
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
God of War III
Upgrade paths short and obvious.
Ori and the Blind Forest
Ability routing and shard builds matter
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.