head to head
SWAT 4 asks more than Grand Theft Auto V, and the gap is optimization.

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

Optimization · Practiced Mastery
A tactical police shooter where careful, methodical tactics against randomized threats defines mastery.
Grand Theft Auto V leans Execution (Practiced Mastery); SWAT 4 leans Optimization (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Grand Theft Auto V
Driving and shooting demand decent inputs.
SWAT 4
precise aim and careful movement required
Grand Theft Auto V leans a little harder on reads, though the gap is small.
Grand Theft Auto V
Online PvP exists but mostly gear/positioning, not modeling.
SWAT 4
suspects react but don't truly adapt
SWAT 4 leans a little harder on variance, though the gap is small.
Grand Theft Auto V
Some mission and lobby randomness.
SWAT 4
suspect placement and behavior randomized
SWAT 4 leans clearly harder on optimization.
Grand Theft Auto V
Heists, money loops, builds learnable.
SWAT 4
tactics and equipment loadouts solvable
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.