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
A PSP prequel following three keyblade wielders with a deep command-melding build system.

Optimization · Pure Optimization
A Zelda-like puzzle-action game solved by decoding its hidden manual.
Kingdom Hearts Birth by Sleep leans Optimization (Practiced Mastery); Tunic leans Optimization (Pure Optimization).
Kingdom Hearts Birth by Sleep leans a little harder on execution, though the gap is small.
Kingdom Hearts Birth by Sleep
Dodge timing against brutal secret bosses
Tunic
Dodge-roll combat demands timing
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Kingdom Hearts Birth by Sleep
Pattern-based bosses, no adaptation
Tunic
Bosses are scripted, not adaptive
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Kingdom Hearts Birth by Sleep
Command melding outcomes are documented
Tunic
Minimal RNG in core loop
Tunic leans a little harder on optimization, though the gap is small.
Kingdom Hearts Birth by Sleep
Command deck melding largely solves the game
Tunic
Manual decoding and build choices solve everything
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.