head to head
Bloodborne asks more than Grand Theft Auto V, and the gap is execution.

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

Execution · Practiced Mastery
Sandbox crime playground spanning shooting, driving, and a persistent online economy.
Bloodborne leans Execution (Practiced Mastery); Grand Theft Auto V leans Execution (Practiced Mastery).
Bloodborne leans clearly harder on execution.
Bloodborne
Aggressive dodges and rally timing demand sharp hands.
Grand Theft Auto V
Driving and shooting demand decent inputs.
Grand Theft Auto V leans a little harder on reads, though the gap is small.
Bloodborne
Bosses follow fixed movesets; no model of you.
Grand Theft Auto V
Online PvP exists but mostly gear/positioning, not modeling.
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 Theft Auto V
Some mission and lobby randomness.
Bloodborne leans clearly harder on optimization.
Bloodborne
Builds, weapons, and boss patterns are studyable and solvable.
Grand Theft Auto V
Heists, money loops, builds learnable.
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.