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 · Pure Mechanics
A boss-rush action game that is nothing but execution tests against scripted duelists.

Execution · Practiced Mastery
A character action RPG built on tight parry timing against elaborate scripted bosses.
Furi leans Execution (Pure Mechanics); Stellar Blade leans Execution (Practiced Mastery).
Furi leans a little harder on execution, though the gap is small.
Furi
Parry timing, bullet dodging, and duel precision
Stellar Blade
Parry and perfect-dodge timing windows define the ceiling
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Furi
Bosses are scripted patterns, however adversarial they feel
Stellar Blade
Bosses run fixed movesets, learnable not adaptive
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Furi
Fixed boss sequences
Stellar Blade
Encounters and loot are static and predictable
Stellar Blade leans a little harder on optimization, though the gap is small.
Furi
Learning each boss's phases converges to mastery
Stellar Blade
Exospine builds, gear and moveset study reward preparation
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.