head to head
Assetto Corsa asks more than Grand Theft Auto: San Andreas, and the gap is execution.

Execution · Practiced Mastery
Hardcore racing sim where execution is everything.

Optimization · Practiced Mastery
A sprawling open-world crime epic with RPG-style character stats across a whole state.
Assetto Corsa leans Execution (Practiced Mastery); Grand Theft Auto: San Andreas leans Optimization (Practiced Mastery).
Assetto Corsa leans clearly harder on execution.
Assetto Corsa
Demanding wheel control, braking, throttle precision
Grand Theft Auto: San Andreas
Flying school and drive-bys need decent hands
Assetto Corsa leans clearly harder on reads.
Assetto Corsa
Light online wheel-to-wheel reads
Grand Theft Auto: San Andreas
Gang AI is scripted, never adaptive
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Assetto Corsa
Tire and track temp variance
Grand Theft Auto: San Andreas
Territory wars and traffic add light randomness
Assetto Corsa leans a little harder on optimization, though the gap is small.
Assetto Corsa
Setup tuning, car-track combo mastery
Grand Theft Auto: San Andreas
Stats, gym, weapon skill, and routes reward systematic play
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.