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

Execution · Competitive PvP
Tests shot-stick timing and badge-build optimization against human defenders.
Call of Duty: Ghosts leans Execution (Practiced Mastery); NBA 2K20 leans Execution (Competitive PvP).
Call of Duty: Ghosts leans a little harder on execution, though the gap is small.
Call of Duty: Ghosts
Fast time-to-kill rewards first-shot aim
NBA 2K20
Shot timing and dribble combos require practiced stick work
NBA 2K20 leans a little harder on reads, though the gap is small.
Call of Duty: Ghosts
Outguessing human routes and peeks matters
NBA 2K20
Outguessing human defenders and callers decides online possessions
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Call of Duty: Ghosts
Spawns and lobby matchups add noise
NBA 2K20
Shot RNG and rebounds swing tight games
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
NBA 2K20
Builds, badges and playbook knowledge dominate MyCareer and online
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.