head to head
Pac-Man 99 asks more than Grand Theft Auto: San Andreas, and the gap is execution.

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

Execution · Practiced Mastery
Tests fast maze execution and ghost-train routing under randomized attack pressure.
Grand Theft Auto: San Andreas leans Optimization (Practiced Mastery); Pac-Man 99 leans Execution (Practiced Mastery).
Pac-Man 99 leans clearly harder on execution.
Grand Theft Auto: San Andreas
Flying school and drive-bys need decent hands
Pac-Man 99
Maze steering at speed under jammer pressure decides survival
Pac-Man 99 leans clearly harder on reads.
Grand Theft Auto: San Andreas
Gang AI is scripted, never adaptive
Pac-Man 99
98 opponents are anonymous noise, not readable minds
Pac-Man 99 leans clearly harder on variance.
Grand Theft Auto: San Andreas
Territory wars and traffic add light randomness
Pac-Man 99
Incoming attacks and ghost spawns randomize each match
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
Pac-Man 99
Ghost-train routing and target strategies have known best lines
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.