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
A serious F1 simulation testing precise car control and setup optimization.
Bloodborne leans Execution (Practiced Mastery); Grand Prix 4 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.
Grand Prix 4
Precise braking, throttle and racing-line control define lap times
Grand Prix 4 leans a little harder on reads, though the gap is small.
Bloodborne
Bosses follow fixed movesets; no model of you.
Grand Prix 4
AI drivers follow scripted lines, not adapting to you
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.
Grand Prix 4
Weather and grip add some unpredictability per race
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Bloodborne
Builds, weapons, and boss patterns are studyable and solvable.
Grand Prix 4
Setup tuning and optimal lines are a deep solvable layer
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.