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

Execution · Practiced Mastery
A retro Sonic revival celebrating classic-era momentum design.
Rock n' Roll Racing leans Execution (Practiced Mastery); Sonic Mania 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.
Rock n' Roll Racing
Isometric cornering and weapon timing carry races.
Sonic Mania
High-speed reaction platforming
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.
Sonic Mania
No human opponent
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Rock n' Roll Racing
Weapon exchanges and pickups create chaos.
Sonic Mania
Mostly deterministic with hidden routes
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Rock n' Roll Racing
Upgrade purchases and planet-by-planet earnings are plannable.
Sonic Mania
Route knowledge dominates speedruns
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.