head to head
Resident Evil: Operation Raccoon City 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
Squad shooting against scripted hordes with light class-loadout decisions.
Half-Life 2 leans Execution (Pure Mechanics); Resident Evil: Operation Raccoon City 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.
Resident Evil: Operation Raccoon City
Third-person aim against zombie and soldier swarms carries the game
Resident Evil: Operation Raccoon City leans clearly harder on reads.
Half-Life 2
Combine AI scripted, non-adaptive.
Resident Evil: Operation Raccoon City
Versus modes add human prediction; campaign AI is scripted
Resident Evil: Operation Raccoon City leans a little harder on variance, though the gap is small.
Half-Life 2
Almost no randomness.
Resident Evil: Operation Raccoon City
Infection mechanics and spawn chaos add mild unpredictability
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.
Resident Evil: Operation Raccoon City
Class abilities and loadouts are a shallow solvable 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.