head to head
Metal Slug X 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
Memorising enemy spawns then executing pixel-precise dodges for the one-credit clear.
Grand Theft Auto: San Andreas leans Optimization (Practiced Mastery); Metal Slug X leans Execution (Practiced Mastery).
Metal Slug X leans clearly harder on execution.
Grand Theft Auto: San Andreas
Flying school and drive-bys need decent hands
Metal Slug X
Dodging dense bullet patterns demands precise reflexes
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Grand Theft Auto: San Andreas
Gang AI is scripted, never adaptive
Metal Slug X
Every enemy wave is a fixed memorisable script
Grand Theft Auto: San Andreas leans a little harder on variance, though the gap is small.
Grand Theft Auto: San Andreas
Territory wars and traffic add light randomness
Metal Slug X
Nothing meaningful is random once routes are learned
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
Metal Slug X
One-credit clears come from memorising spawns and weapon routes
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.