head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is optimization, and it is a single point.

Execution · Practiced Mastery
Anime soulslike pairing pattern-learning boss fights with flexible class builds.

Execution · Practiced Mastery
The series' action peak, with flashy drive forms and superbosses that built a lasting challenge-run community.
Code Vein leans Execution (Practiced Mastery); Kingdom Hearts II 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.
Code Vein
Dodge timing and stamina management in melee
Kingdom Hearts II
Revenge values and Data fights demand precise play
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Code Vein
Bosses are scripted patterns, never adaptive
Kingdom Hearts II
Even superbosses run scripted, mappable patterns
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Code Vein
Fixed enemy placement; minor drop randomness
Kingdom Hearts II
Fully visible action systems
Code Vein leans a little harder on optimization, though the gap is small.
Code Vein
Blood codes and gift builds reward theorycraft
Kingdom Hearts II
Forms, abilities, and boss study reward labbing
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.