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 encyclopedic driving simulator spanning 700 cars and decades of automotive history.

Execution · Practiced Mastery
Precision car control of vintage machinery refined through setup and line study.
Gran Turismo 4 leans Execution (Practiced Mastery); GT Legends 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.
Gran Turismo 4
Hundreds of cars all demand precise inputs
GT Legends
Historic cars without aids demand precise car control every corner
GT Legends leans a little harder on reads, though the gap is small.
Gran Turismo 4
Fixed-line AI offers no adaptive opposition
GT Legends
Racecraft versus humans exists but pace dominates
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Gran Turismo 4
Deterministic outside slight tyre wear modelling
GT Legends
Conditions are known before the green flag
Gran Turismo 4 leans a little harder on optimization, though the gap is small.
Gran Turismo 4
Event-by-event car and tune selection is deeply solvable
GT Legends
Setup tuning and line study are where lap time lives
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.