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

Execution · Pure Mechanics
A PS4-era Killzone where a Shadow Marshal and his OWL drone fight through a divided Helghast city.

Execution · Competitive PvP
A military shooter testing aim with moderate prediction of human opponents online.
Killzone Shadow Fall leans Execution (Pure Mechanics); Medal of Honor: Warfighter leans Execution (Competitive PvP).
Killzone Shadow Fall leans a little harder on execution, though the gap is small.
Killzone Shadow Fall
Standard FPS aim and movement ceiling
Medal of Honor: Warfighter
Gunfights reward aim in both campaign and multiplayer
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Killzone Shadow Fall
PvP modes reward predicting human players
Medal of Honor: Warfighter
Human opponents in multiplayer demand positional prediction
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Killzone Shadow Fall
Some open level routes and spawn noise
Medal of Honor: Warfighter
Spawns and engagements add modest unpredictability
Killzone Shadow Fall leans a little harder on optimization, though the gap is small.
Killzone Shadow Fall
OWL drone usage and loadouts optimize cleanly
Medal of Honor: Warfighter
Class loadouts and map knowledge form a thin 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.