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

Execution · Pure Mechanics
Arcade driving that tests cornering execution over a small set of memorisable tracks.

Execution · Pure Mechanics
A rail shooter testing aim and reflexes through scripted space battles.
Need for Speed II leans Execution (Pure Mechanics); Star Wars Arcade leans Execution (Pure Mechanics).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Need for Speed II
Cornering and throttle control decide every race
Star Wars Arcade
Aiming and dodging in rail combat decides survival
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Need for Speed II
AI racers follow rubber-banded scripts, not minds
Star Wars Arcade
Enemy ships follow scripted attack patterns
Star Wars Arcade leans a little harder on variance, though the gap is small.
Need for Speed II
Tracks are fixed; nothing meaningful is hidden
Star Wars Arcade
Minor variation in enemy approaches
Need for Speed II leans a little harder on optimization, though the gap is small.
Need for Speed II
Learning six tracks' racing lines and car choice
Star Wars Arcade
Memorizing waves and conserving shields helps
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.