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

Execution · Practiced Mastery
An esports-focused Gran Turismo built around ranked online sportsmanship racing.

Execution · Practiced Mastery
Sandbox crime playground spanning shooting, driving, and a persistent online economy.
Gran Turismo Sport leans Execution (Practiced Mastery); Grand Theft Auto V leans Execution (Practiced Mastery).
Gran Turismo Sport leans clearly harder on execution.
Gran Turismo Sport
Consistent qualifying-pace laps decide online rank
Grand Theft Auto V
Driving and shooting demand decent inputs.
Gran Turismo Sport leans a little harder on reads, though the gap is small.
Gran Turismo Sport
Live opponents create positional duels into corners
Grand Theft Auto V
Online PvP exists but mostly gear/positioning, not modeling.
Grand Theft Auto V leans a little harder on variance, though the gap is small.
Gran Turismo Sport
Mostly deterministic racing
Grand Theft Auto V
Some mission and lobby randomness.
Gran Turismo Sport leans clearly harder on optimization.
Gran Turismo Sport
Tyre and fuel strategy in longer races is 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.