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
Open-world driving that tests car control with a tuning layer underneath.

Execution · Practiced Mastery
An isometric combat racer set to metal covers, mixing vehicle upgrades with weaponized laps.
Forza Horizon leans Execution (Practiced Mastery); Rock n' Roll Racing 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.
Forza Horizon
Driving skill with assists off carries every event
Rock n' Roll Racing
Isometric cornering and weapon timing carry races.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Forza Horizon
AI drivatars follow patterns; casual online adds little
Rock n' Roll Racing
Two-player duels add slight prediction; AI is scripted.
Rock n' Roll Racing leans a little harder on variance, though the gap is small.
Forza Horizon
The open world is fixed and fully discoverable
Rock n' Roll Racing
Weapon exchanges and pickups create chaos.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Forza Horizon
Car tuning and racing lines reward systematic study
Rock n' Roll Racing
Upgrade purchases and planet-by-planet earnings are plannable.
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.