head to head
Grand Theft Auto V asks more than Jak 3, and the gap is reads.

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

Execution · Practiced Mastery
Trilogy closer adding desert vehicles and dark-light eco powers to the formula.
Grand Theft Auto V leans Execution (Practiced Mastery); Jak 3 leans Execution (Practiced Mastery).
Jak 3 leans a little harder on execution, though the gap is small.
Grand Theft Auto V
Driving and shooting demand decent inputs.
Jak 3
Platforming, shooting, and vehicle handling
Grand Theft Auto V leans clearly harder on reads.
Grand Theft Auto V
Online PvP exists but mostly gear/positioning, not modeling.
Jak 3
Enemies run fixed scripts
Grand Theft Auto V leans a little harder on variance, though the gap is small.
Grand Theft Auto V
Some mission and lobby randomness.
Jak 3
Deterministic desert and city
Jak 3 leans a little harder on optimization, though the gap is small.
Grand Theft Auto V
Heists, money loops, builds learnable.
Jak 3
Upgrade paths and mission approach choices
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.