head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Execution · Practiced Mastery
Kirby's breezy Game Boy debut, floating and inhaling through five short dreamlike stages.

Execution · Practiced Mastery
Gentle collect-and-glide platforming with light routing depth.
Kirby's Dream Land leans Execution (Practiced Mastery); Spyro the Dragon 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.
Kirby's Dream Land
Gentle platforming, harder in Extra Mode
Spyro the Dragon
Gliding and charging need modest precision at most
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Kirby's Dream Land
Bosses loop tiny fixed patterns
Spyro the Dragon
Gnorcs repeat one behaviour forever
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Kirby's Dream Land
Nothing hidden after one loop
Spyro the Dragon
Gem locations are fixed once levels are explored
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Kirby's Dream Land
Short fixed levels, simple boss study
Spyro the Dragon
Collection routing and glide lines reward light 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.