head to head
Neither is simply harder - they are hard in different places. Bolsomito demands more variance; Kirby Star Allies demands more optimization.

Execution · Light / Casual
A satirical Brazilian political-themed arcade game.

Optimization · Practiced Mastery
An easygoing co-op Kirby about recruiting enemies as friends and combining their elemental powers.
Bolsomito leans Execution (Light / Casual); Kirby Star Allies leans Optimization (Practiced Mastery).
Bolsomito leans a little harder on execution, though the gap is small.
Bolsomito
basic reflex-based arcade inputs
Kirby Star Allies
Very low difficulty, AI allies carry fights
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Bolsomito
no adaptive opponent present
Kirby Star Allies
Friend AI helps rather than opposes
Bolsomito leans clearly harder on variance.
Bolsomito
random comedic event triggers
Kirby Star Allies
Fixed layouts and bosses
Kirby Star Allies leans clearly harder on optimization.
Bolsomito
minimal solvable systems present
Kirby Star Allies
Friend-ability element combos solve puzzles
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.