head to head
James Bond 007: Quantum of Solace asks more than Half-Life 2, and the gap is reads.

Execution · Pure Mechanics
Landmark FPS built on physics puzzles and tight gunplay.

Execution · Pure Mechanics
Cover-shooter aim and QTE timing through scripted film setpieces.
Half-Life 2 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.
Half-Life 2
Gravity gun and shooting demand precision.
James Bond 007: Quantum of Solace
Cover shooting and quick-time events run on aim and timing
James Bond 007: Quantum of Solace leans clearly harder on reads.
Half-Life 2
Combine AI scripted, non-adaptive.
James Bond 007: Quantum of Solace
Multiplayer adds modest human prediction; campaign is scripted
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Half-Life 2
Almost no randomness.
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.
Half-Life 2
Linear progression with no builds.
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.