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

Execution · Practiced Mastery
An isometric combat racer set to metal covers, mixing vehicle upgrades with weaponized laps.

Execution · Pure Mechanics
Arcade racing lines and traffic-dodging reflexes on memorisable tracks.
Rock n' Roll Racing leans Execution (Practiced Mastery); Test Drive 6 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.
Rock n' Roll Racing
Isometric cornering and weapon timing carry races.
Test Drive 6
Cornering at speed through traffic is the entire challenge
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Rock n' Roll Racing
Two-player duels add slight prediction; AI is scripted.
Test Drive 6
AI racers follow rubber-band scripts, not minds to model
Rock n' Roll Racing leans a little harder on variance, though the gap is small.
Rock n' Roll Racing
Weapon exchanges and pickups create chaos.
Test Drive 6
Traffic adds mild unpredictability to known tracks
Rock n' Roll Racing leans a little harder on optimization, though the gap is small.
Rock n' Roll Racing
Upgrade purchases and planet-by-planet earnings are plannable.
Test Drive 6
Learning racing lines and car choice is 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.