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 · Competitive PvP
A military shooter testing aim with moderate prediction of human opponents online.

Execution · Pure Mechanics
Squad shooting against scripted hordes with light class-loadout decisions.
Medal of Honor: Warfighter leans Execution (Competitive PvP); 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.
Medal of Honor: Warfighter
Gunfights reward aim in both campaign and multiplayer
Resident Evil: Operation Raccoon City
Third-person aim against zombie and soldier swarms carries the game
Medal of Honor: Warfighter leans a little harder on reads, though the gap is small.
Medal of Honor: Warfighter
Human opponents in multiplayer demand positional prediction
Resident Evil: Operation Raccoon City
Versus modes add human prediction; campaign AI is scripted
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Medal of Honor: Warfighter
Spawns and engagements add modest unpredictability
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.
Medal of Honor: Warfighter
Class loadouts and map knowledge form a thin layer
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.