head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is execution, and it is a single point.

Execution · Practiced Mastery
Simulation driving precision underpinned by setup tuning and race strategy.

Execution · Pure Mechanics
A DTM-heritage sim where laser-precise car control and setup knowledge separate the field.
Project CARS leans Execution (Practiced Mastery); RaceRoom Racing Experience leans Execution (Pure Mechanics).
RaceRoom Racing Experience leans a little harder on execution, though the gap is small.
Project CARS
Braking points and wheel control at the sim limit
RaceRoom Racing Experience
DTM and touring-car precision demands tight braking and throttle
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Project CARS
Online racecraft against humans adds light positional prediction
RaceRoom Racing Experience
Multiplayer grids have light positional opponent reading
Project CARS leans a little harder on variance, though the gap is small.
Project CARS
Dynamic weather injects some session randomness
RaceRoom Racing Experience
Near-deterministic physics; minimal hidden randomness
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Project CARS
Setup tuning and pit strategy reward deep study
RaceRoom Racing Experience
Brake balance, setup and tyre management are clearly solvable
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.