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

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

Execution · Pure Mechanics
High-speed anti-gravity handling over memorised racing lines with light weapon chaos.
Project CARS leans Execution (Practiced Mastery); Wipeout 2048 leans Execution (Pure Mechanics).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Project CARS
Braking points and wheel control at the sim limit
Wipeout 2048
Pixel-perfect anti-grav handling at speed is the core test
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
Wipeout 2048
Online racers add light weapon-timing prediction
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Project CARS
Dynamic weather injects some session randomness
Wipeout 2048
Weapon pad pickups inject some racing randomness
Project CARS leans a little harder on optimization, though the gap is small.
Project CARS
Setup tuning and pit strategy reward deep study
Wipeout 2048
Track lines, barrel-roll spots and ship choice are 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.