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
The series' action peak, with flashy drive forms and superbosses that built a lasting challenge-run community.

Execution · Practiced Mastery
Rhythm-infused action game of rock duo versus EDM empire boss fights.
Kingdom Hearts II leans Execution (Practiced Mastery); No Straight Roads leans Execution (Practiced Mastery).
Kingdom Hearts II leans a little harder on execution, though the gap is small.
Kingdom Hearts II
Revenge values and Data fights demand precise play
No Straight Roads
Dodging and attacking on the musical beat
Kingdom Hearts II leans a little harder on reads, though the gap is small.
Kingdom Hearts II
Even superbosses run scripted, mappable patterns
No Straight Roads
Bosses follow rhythm-locked scripts
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Kingdom Hearts II
Fully visible action systems
No Straight Roads
Patterns are fixed to the soundtrack
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Kingdom Hearts II
Forms, abilities, and boss study reward labbing
No Straight Roads
Learning each boss's beat-mapped moveset
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.