head to head
Grand Theft Auto: San Andreas asks more than LittleBigPlanet 2, and the gap is optimization.

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

Execution · Practiced Mastery
The sequel that turned LittleBigPlanet's creator into a full game-making toolset.
Grand Theft Auto: San Andreas leans Optimization (Practiced Mastery); LittleBigPlanet 2 leans Execution (Practiced Mastery).
LittleBigPlanet 2 leans a little harder on execution, though the gap is small.
Grand Theft Auto: San Andreas
Flying school and drive-bys need decent hands
LittleBigPlanet 2
Floaty platforming and grappling demand adjustment
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
LittleBigPlanet 2
No adaptive opposition
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
LittleBigPlanet 2
Fixed levels
Grand Theft Auto: San Andreas leans clearly harder on optimization.
Grand Theft Auto: San Andreas
Stats, gym, weapon skill, and routes reward systematic play
LittleBigPlanet 2
Score multipliers and collectible routing
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.