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

Optimization · Practiced Mastery
An easygoing co-op Kirby about recruiting enemies as friends and combining their elemental powers.

Optimization · Practiced Mastery
A forgiving co-op collect-a-thon that tests completionist routing, not skill ceilings.
Kirby Star Allies leans Optimization (Practiced Mastery); LEGO Star Wars: The Force Awakens leans Optimization (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Kirby Star Allies
Very low difficulty, AI allies carry fights
LEGO Star Wars: The Force Awakens
Blaster battles and platforming stay deliberately forgiving
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Kirby Star Allies
Friend AI helps rather than opposes
LEGO Star Wars: The Force Awakens
First Order enemies are scripted set dressing
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Kirby Star Allies
Fixed layouts and bosses
LEGO Star Wars: The Force Awakens
Multi-build choices are visible options, not hidden information
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Kirby Star Allies
Friend-ability element combos solve puzzles
LEGO Star Wars: The Force Awakens
Hundred-percenting collectibles is the only system to solve
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.