head to head
Star Control 3 asks more than Grand Theft Auto: San Andreas, and the gap is reads.

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

Optimization · Practiced Mastery
A space-strategy adventure mixing ship combat with empire resource management.
Grand Theft Auto: San Andreas leans Optimization (Practiced Mastery); Star Control 3 leans Optimization (Practiced Mastery).
Star Control 3 leans a little harder on execution, though the gap is small.
Grand Theft Auto: San Andreas
Flying school and drive-bys need decent hands
Star Control 3
Ship melee combat needs decent aim and maneuvering
Star Control 3 leans clearly harder on reads.
Grand Theft Auto: San Andreas
Gang AI is scripted, never adaptive
Star Control 3
AI captains use fixed tactics; some PvP melee allows prediction
Star Control 3 leans clearly harder on variance.
Grand Theft Auto: San Andreas
Territory wars and traffic add light randomness
Star Control 3
Exploration and resource discovery are scripted-but-unknown
Star Control 3 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
Star Control 3
Fleet building, colonization and resource management drive progress
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.