head to head
Dead Space 3 asks more than Grand Theft Auto: San Andreas, and the gap is execution.

Execution · Practiced Mastery
A crafting-heavy survival shooter where weapon-build optimisation and aimed dismemberment carry the loop.

Optimization · Practiced Mastery
A sprawling open-world crime epic with RPG-style character stats across a whole state.
Dead Space 3 leans Execution (Practiced Mastery); Grand Theft Auto: San Andreas leans Optimization (Practiced Mastery).
Dead Space 3 leans clearly harder on execution.
Dead Space 3
Weapon crafting alters execution demands but shooting stays central
Grand Theft Auto: San Andreas
Flying school and drive-bys need decent hands
Dead Space 3 leans a little harder on reads, though the gap is small.
Dead Space 3
All enemies scripted; co-op adds coordination not prediction
Grand Theft Auto: San Andreas
Gang AI is scripted, never adaptive
Dead Space 3 leans a little harder on variance, though the gap is small.
Dead Space 3
Scavenger bot loot adds mild RNG to crafting resources
Grand Theft Auto: San Andreas
Territory wars and traffic add light randomness
Dead Space 3 leans a little harder on optimization, though the gap is small.
Dead Space 3
Deep weapon crafting system rewards systematic optimisation
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.