head to head
Grand Theft Auto V asks more than Harry Potter and the Prisoner of Azkaban, and the gap is execution.

Execution · Practiced Mastery
Sandbox crime playground spanning shooting, driving, and a persistent online economy.

Optimization · Practiced Mastery
A gentle licensed adventure testing basic puzzle matching and collectible hunting.
Grand Theft Auto V leans Execution (Practiced Mastery); Harry Potter and the Prisoner of Azkaban leans Optimization (Practiced Mastery).
Grand Theft Auto V leans clearly harder on execution.
Grand Theft Auto V
Driving and shooting demand decent inputs.
Harry Potter and the Prisoner of Azkaban
Simple spell-casting and platforming aimed at younger players
Grand Theft Auto V leans clearly harder on reads.
Grand Theft Auto V
Online PvP exists but mostly gear/positioning, not modeling.
Harry Potter and the Prisoner of Azkaban
All enemies and puzzles are fully scripted
Grand Theft Auto V leans a little harder on variance, though the gap is small.
Grand Theft Auto V
Some mission and lobby randomness.
Harry Potter and the Prisoner of Azkaban
Hidden collectible locations are fixed once discovered
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Grand Theft Auto V
Heists, money loops, builds learnable.
Harry Potter and the Prisoner of Azkaban
Matching the right character's spell to each puzzle
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.