head to head
SCUM 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.

Execution · Practiced Mastery
A hardcore open-world survival game where other prisoners are the real threat.
Grand Theft Auto: San Andreas leans Optimization (Practiced Mastery); SCUM leans Execution (Practiced Mastery).
SCUM leans clearly harder on execution.
Grand Theft Auto: San Andreas
Flying school and drive-bys need decent hands
SCUM
Realistic gunplay and ballistics punish poor aim
SCUM leans clearly harder on reads.
Grand Theft Auto: San Andreas
Gang AI is scripted, never adaptive
SCUM
Human players ambush and adapt across the island
SCUM leans clearly harder on variance.
Grand Theft Auto: San Andreas
Territory wars and traffic add light randomness
SCUM
Loot spawns and unseen players create constant unknowns
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Grand Theft Auto: San Andreas
Stats, gym, weapon skill, and routes reward systematic play
SCUM
Deep metabolism and gear systems reward planning
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.