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.

Optimization · Practiced Mastery
Zelda-flavoured musou where one hero mows down armies across Calamity-era Hyrule.

Execution · Practiced Mastery
The saga's flashy conclusion sending Sora through Pixar and Disney worlds toward the Keyblade War.
Hyrule Warriors: Age of Calamity leans Optimization (Practiced Mastery); Kingdom Hearts III leans Execution (Practiced Mastery).
Kingdom Hearts III leans a little harder on execution, though the gap is small.
Hyrule Warriors: Age of Calamity
Combo timing, dodges, and flurry-rush windows
Kingdom Hearts III
Limit Cut bosses require sharp reactions
Kingdom Hearts III leans a little harder on reads, though the gap is small.
Hyrule Warriors: Age of Calamity
Enemy hordes are scripted, never adaptive
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.
Hyrule Warriors: Age of Calamity
Minor drop randomness only
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.
Hyrule Warriors: Age of Calamity
Character builds, weapon fusion, and mission routing
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.