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

Execution · Practiced Mastery
An aggressive soulslike about punishing fixed boss patterns with tight dodging.

Execution · Practiced Mastery
A character action RPG built on tight parry timing against elaborate scripted bosses.
Bloodborne leans Execution (Practiced Mastery); Stellar Blade 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.
Bloodborne
Aggressive dodges and rally timing demand sharp hands.
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.
Bloodborne
Bosses follow fixed movesets; no model of you.
Stellar Blade
Bosses run fixed movesets, learnable not adaptive
Bloodborne leans a little harder on variance, though the gap is small.
Bloodborne
Chalice dungeon layouts and drops add some randomness.
Stellar Blade
Encounters and loot are static and predictable
Bloodborne leans a little harder on optimization, though the gap is small.
Bloodborne
Builds, weapons, and boss patterns are studyable and solvable.
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.