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
Treyarch's future-tech Call of Duty that anchored competitive console FPS.

Execution · Practiced Mastery
Massive persistent-war FPS where hundreds of players contest continents simultaneously.
Call of Duty: Black Ops II leans Execution (Pure Mechanics); PlanetSide 2 leans Execution (Practiced Mastery).
Call of Duty: Black Ops II leans a little harder on execution, though the gap is small.
Call of Duty: Black Ops II
Snap aim and movement speed decide split-second gunfights
PlanetSide 2
Gunplay and vehicle piloting at FPS standards
Call of Duty: Black Ops II leans a little harder on reads, though the gap is small.
Call of Duty: Black Ops II
Human lobbies adapt rotations; pros mind-game spawns
PlanetSide 2
Human enemies adapt, diluted across hundreds
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Call of Duty: Black Ops II
Spawn flips and scorestreak chaos inject randomness
PlanetSide 2
Massive battles produce constant chaos
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Call of Duty: Black Ops II
Pick-10 classes and streak economies reward optimization
PlanetSide 2
Loadouts, terrain, and territory strategy matter
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.