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

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

Execution · Practiced Mastery
Simulation driving precision underpinned by setup tuning and race strategy.
Bloodborne leans Execution (Practiced Mastery); Project CARS 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.
Project CARS
Braking points and wheel control at the sim limit
Project CARS leans a little harder on reads, though the gap is small.
Bloodborne
Bosses follow fixed movesets; no model of you.
Project CARS
Online racecraft against humans adds light positional prediction
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Bloodborne
Chalice dungeon layouts and drops add some randomness.
Project CARS
Dynamic weather injects some session randomness
Bloodborne leans a little harder on optimization, though the gap is small.
Bloodborne
Builds, weapons, and boss patterns are studyable and solvable.
Project CARS
Setup tuning and pit strategy reward deep study
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.