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
A boost-era Sonic where your custom avatar joins the fight against Infinite.
Kirby's Dream Land leans Execution (Practiced Mastery); Sonic Forces 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
Sonic Forces
Short boost stages with modest demands
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
Sonic Forces
Scripted villains only
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
Sonic Forces
Deterministic levels
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
Sonic Forces
S-rank routes and avatar Wispon choices
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.