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

Execution · Practiced Mastery
Hoverboard racing built on trick timing and learned gravity-shortcut routes.
Forza Horizon leans Execution (Practiced Mastery); Sonic Riders: Zero Gravity 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
Sonic Riders: Zero Gravity
Trick timing and gravity maneuvers demand constant precise inputs
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
Sonic Riders: Zero Gravity
Versus mode adds minimal opponent prediction
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Forza Horizon
The open world is fixed and fully discoverable
Sonic Riders: Zero Gravity
Tracks are fixed; almost nothing hidden
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
Sonic Riders: Zero Gravity
Gear choice and gravity-shortcut routing separate the field
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.