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

Execution · Practiced Mastery
A kart racer with an adventure structure and three vehicle types, lighter on item chaos than its rivals.

Execution · Practiced Mastery
A marble-shooter testing aim and timing to match advancing colored spheres.
Diddy Kong Racing leans Execution (Practiced Mastery); Luxor 3 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.
Diddy Kong Racing
Drift boosts across car, hovercraft and plane demand precision.
Luxor 3
Aiming and timing shots at moving spheres is the core
Diddy Kong Racing leans a little harder on reads, though the gap is small.
Diddy Kong Racing
Multiplayer item duels add mild prediction; AI is scripted.
Luxor 3
Solo - no opponent to predict
Luxor 3 leans a little harder on variance, though the gap is small.
Diddy Kong Racing
Balloon pickups and items inject moderate randomness.
Luxor 3
Sphere color sequences add randomness
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Diddy Kong Racing
Vehicle choice, balloon upgrade routes and boss strategies converge.
Luxor 3
Power-up usage and chain planning improve scores
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.