head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Execution · Practiced Mastery
A realistic motorcycle racing sim about precise lines, braking and bike setup.

Execution · Practiced Mastery
Simulation driving precision underpinned by setup tuning and race strategy.
MotoGP 21 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.
MotoGP 21
Braking points, throttle and racing lines demand precision
Project CARS
Braking points and wheel control at the sim limit
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
MotoGP 21
AI scripted; online rivals add light positional prediction
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.
MotoGP 21
Tire wear and weather introduce some chance
Project CARS
Dynamic weather injects some session randomness
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
MotoGP 21
Setup tuning and race strategy underpin lap times
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.