head to head
Puyo Puyo Fever 2 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
A competitive falling-blob puzzle testing fast chaining under speed pressure.
Grand Theft Auto: San Andreas leans Optimization (Practiced Mastery); Puyo Puyo Fever 2 leans Execution (Practiced Mastery).
Puyo Puyo Fever 2 leans clearly harder on execution.
Grand Theft Auto: San Andreas
Flying school and drive-bys need decent hands
Puyo Puyo Fever 2
Fast chaining under accelerating speed is the lead axis
Puyo Puyo Fever 2 leans clearly harder on reads.
Grand Theft Auto: San Andreas
Gang AI is scripted, never adaptive
Puyo Puyo Fever 2
Versus human play adds light prediction of attacks
Puyo Puyo Fever 2 leans a little harder on variance, though the gap is small.
Grand Theft Auto: San Andreas
Territory wars and traffic add light randomness
Puyo Puyo Fever 2
Piece colors random but quickly mapped
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
Puyo Puyo Fever 2
Chain patterns have known optimal building techniques
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.