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
Dodging scripted bullet patterns with stage memorisation doing the planning.

Execution · Practiced Mastery
A single-marque racer tracing Porsche's history with unusually demanding handling for its series.
Air Buster leans Execution (Pure Mechanics); Need for Speed: Porsche Unleashed leans Execution (Practiced Mastery).
Air Buster leans a little harder on execution, though the gap is small.
Air Buster
Bullet weaving and tight corridors demand precise control
Need for Speed: Porsche Unleashed
Weighty handling model punishes sloppy inputs.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Air Buster
Enemy waves are fully scripted patterns
Need for Speed: Porsche Unleashed
AI racers run fixed lines.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Air Buster
Spawns are deterministic once a credit is studied
Need for Speed: Porsche Unleashed
Fixed point-to-point courses; little hidden.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Air Buster
Memorising stage layouts and power-up routes drives clears
Need for Speed: Porsche Unleashed
Career car trading and upgrade economy reward planning.
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.