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

Execution · Pure Mechanics
WWII gunfight execution with light multiplayer prediction.

Execution · Pure Mechanics
Cover-shooter aim and QTE timing through scripted film setpieces.
Call of Duty 3 leans Execution (Pure Mechanics); James Bond 007: Quantum of Solace leans Execution (Pure Mechanics).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Call of Duty 3
Aimbot trivialises both campaign and multiplayer gunfights
James Bond 007: Quantum of Solace
Cover shooting and quick-time events run on aim and timing
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Call of Duty 3
Multiplayer adds modest human positional prediction
James Bond 007: Quantum of Solace
Multiplayer adds modest human prediction; campaign is scripted
Call of Duty 3 leans a little harder on variance, though the gap is small.
Call of Duty 3
Scripted setpieces and spawn flow add minor unknowns
James Bond 007: Quantum of Solace
Setpiece encounters repeat identically
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Call of Duty 3
Map knowledge and weapon choice reward light study
James Bond 007: Quantum of Solace
Weapon choice and cover routes are shallow systems
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.