head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Execution · Competitive PvP
Large-scale combined-arms shooter with aim-heavy gunplay.

Execution · Competitive PvP
Cold War-era shooter pairing twitch multiplayer with the cult Zombies mode.
Battlefield 2042 leans Execution (Competitive PvP); Call of Duty: Black Ops leans Execution (Competitive PvP).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Battlefield 2042
Recoil control and aim across long sightlines
Call of Duty: Black Ops
Gunfights hinge on aim and reaction speed
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Battlefield 2042
Vehicle and squad PvP rewards prediction
Call of Duty: Black Ops
Reading human opponents' positioning and timing
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Battlefield 2042
Chaotic 128-player skirmishes add noise
Call of Duty: Black Ops
Spawns, care packages, zombies RNG
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Battlefield 2042
Loadouts, specialists, vehicle synergies matter
Call of Duty: Black Ops
Class builds, map control, zombies routing
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.