head to head
NBA 2K3 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 basketball sim testing shot timing and tactical play against opponents.
Grand Theft Auto: San Andreas leans Optimization (Practiced Mastery); NBA 2K3 leans Execution (Practiced Mastery).
NBA 2K3 leans clearly harder on execution.
Grand Theft Auto: San Andreas
Flying school and drive-bys need decent hands
NBA 2K3
Shooting and dribble timing decide plays
NBA 2K3 leans clearly harder on reads.
Grand Theft Auto: San Andreas
Gang AI is scripted, never adaptive
NBA 2K3
Human opponents reward reading offense and defense
NBA 2K3 leans a little harder on variance, though the gap is small.
Grand Theft Auto: San Andreas
Territory wars and traffic add light randomness
NBA 2K3
Shot success carries randomness
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
NBA 2K3
Playcalling, rotations, and team management 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.