head to head
Kirby Super Star asks more than Grand Theft Auto: San Andreas, and the gap is execution.

Optimization · Practiced Mastery
A sprawling open-world crime epic with RPG-style character stats across a whole state.

Execution · Practiced Mastery
An anthology of bite-sized Kirby adventures with deep copy abilities and co-op helpers.
Grand Theft Auto: San Andreas leans Optimization (Practiced Mastery); Kirby Super Star leans Execution (Practiced Mastery).
Kirby Super Star leans clearly harder on execution.
Grand Theft Auto: San Andreas
Flying school and drive-bys need decent hands
Kirby Super Star
Helper juggling and The Arena demand competence
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Grand Theft Auto: San Andreas
Gang AI is scripted, never adaptive
Kirby Super Star
Pattern-based bosses throughout
Grand Theft Auto: San Andreas leans a little harder on variance, though the gap is small.
Grand Theft Auto: San Andreas
Territory wars and traffic add light randomness
Kirby Super Star
Treasure locations in Great Cave are fixed
Grand Theft Auto: San Andreas leans a little harder on optimization, though the gap is small.
Grand Theft Auto: San Andreas
Stats, gym, weapon skill, and routes reward systematic play
Kirby Super Star
Ability matchups and boss patterns reward learning
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.