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
Precision car control of vintage machinery refined through setup and line study.

Execution · Practiced Mastery
A rhythm-driven character action game where everything moves to the beat.
GT Legends leans Execution (Practiced Mastery); Hi-Fi Rush 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.
GT Legends
Historic cars without aids demand precise car control every corner
Hi-Fi Rush
Rhythm-timed combos demand precise inputs.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
GT Legends
Racecraft versus humans exists but pace dominates
Hi-Fi Rush
Bosses are scripted, not adaptive.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
GT Legends
Conditions are known before the green flag
Hi-Fi Rush
Minimal randomness in encounters.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
GT Legends
Setup tuning and line study are where lap time lives
Hi-Fi Rush
Combo routes and chip builds reward optimization.
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.