head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is reads, and it is a single point.

Execution · Practiced Mastery
A grittier crime story where weighty driving and gunplay carry the experience.

Execution · Practiced Mastery
A licensed action shooter testing basic aim through cinematic scripted missions.
Grand Theft Auto IV leans Execution (Practiced Mastery); James Bond 007: From Russia with Love leans Execution (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 IV
Heavier driving and cover shooting reward control.
James Bond 007: From Russia with Love
Lock-on shooting and driving need only basic dexterity
Grand Theft Auto IV leans a little harder on reads, though the gap is small.
Grand Theft Auto IV
Scripted AI, no adaptive opponent modeling.
James Bond 007: From Russia with Love
Henchmen follow scripted attack patterns
Grand Theft Auto IV leans a little harder on variance, though the gap is small.
Grand Theft Auto IV
Minor mission variance.
James Bond 007: From Russia with Love
Linear missions hide little
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Grand Theft Auto IV
Mission routing and weapon picks learnable.
James Bond 007: From Russia with Love
Gadget upgrades add a thin progression layer
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.