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

Execution · Practiced Mastery
A near-future Call of Duty with squad-focused multiplayer and the Extinction mode.

Execution · Practiced Mastery
A modern Gears entry spanning campaign, Horde, Escape, and ranked versus.
Call of Duty: Ghosts leans Execution (Practiced Mastery); Gears 5 leans Execution (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Call of Duty: Ghosts
Fast time-to-kill rewards first-shot aim
Gears 5
Movement tech and shotgun duels remain the core test
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Call of Duty: Ghosts
Outguessing human routes and peeks matters
Gears 5
Ranked versus rewards out-thinking human opponents
Call of Duty: Ghosts leans a little harder on variance, though the gap is small.
Call of Duty: Ghosts
Spawns and lobby matchups add noise
Gears 5
Escape and Horde inject some run variance
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Call of Duty: Ghosts
Loadout and map knowledge are solvable layers
Gears 5
Character ultimates and map control are learnable
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.