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.

Optimization · Practiced Mastery
A 3DS Kirby playing with foreground-background depth and the vacuum-everything Hypernova power.

Optimization · Practiced Mastery
A family-friendly open-world driving adventure romping through Springfield's mystery of cameras and cola.
Kirby: Triple Deluxe leans Optimization (Practiced Mastery); The Simpsons: Hit & Run leans Optimization (Practiced Mastery).
The Simpsons: Hit & Run leans a little harder on execution, though the gap is small.
Kirby: Triple Deluxe
Easy main game, modest arena challenges
The Simpsons: Hit & Run
Forgiving driving and light platforming
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Kirby: Triple Deluxe
Bosses follow fixed patterns
The Simpsons: Hit & Run
No adaptive opposition exists
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Kirby: Triple Deluxe
Levels fully deterministic
The Simpsons: Hit & Run
Fixed missions with trivial traffic noise
The Simpsons: Hit & Run leans a little harder on optimization, though the gap is small.
Kirby: Triple Deluxe
Sun-stone hunting and foreground-background gimmick puzzles
The Simpsons: Hit & Run
Mission routes, shortcuts, and collectible runs are solvable
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.