head to head
Gran Turismo 7 asks more than Project CARS, and the gap is optimization.

Execution · Practiced Mastery
A simulation racer where tuning and clean laps dominate the podium.

Execution · Practiced Mastery
Simulation driving precision underpinned by setup tuning and race strategy.
Gran Turismo 7 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.
Gran Turismo 7
Braking points and throttle modulation define lap times.
Project CARS
Braking points and wheel control at the sim limit
Project CARS leans a little harder on reads, though the gap is small.
Gran Turismo 7
AI is scripted; online drivers offer minor adaptation.
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.
Gran Turismo 7
Tire wear and weather add modest randomness.
Project CARS
Dynamic weather injects some session randomness
Gran Turismo 7 leans clearly harder on optimization.
Gran Turismo 7
Car setup, tuning, and pit strategy heavily decisive.
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.