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

Execution · Pure Mechanics
One of the most mechanically demanding racers ever made, where mastering its physics tech is everything.

Execution · Pure Mechanics
Precision car control over learnable racing lines and braking points.
F-Zero GX leans Execution (Pure Mechanics); TOCA 2: Touring Car Challenge leans Execution (Pure Mechanics).
F-Zero GX leans a little harder on execution, though the gap is small.
F-Zero GX
Snaking and frame-tight control at absurd speeds
TOCA 2: Touring Car Challenge
Perfect inputs through every corner is what wins races
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
F-Zero GX
No adaptive opposition
TOCA 2: Touring Car Challenge
AI drivers follow set racing lines, not your psychology
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
F-Zero GX
Fixed tracks, deterministic physics
TOCA 2: Touring Car Challenge
Weather shifts races slightly, otherwise deterministic
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
F-Zero GX
Machine settings and advanced technique routes are mappable
TOCA 2: Touring Car Challenge
Racing lines, braking points and setups are solvable per track
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.