head to head
Call of Duty: Warzone asks more than Insurgency, and the gap is variance.

Execution · Grand Arena
Battle royale built on COD's tight gunplay.

Execution · Competitive PvP
Hardcore team shooter where one bullet kills and the HUD tells you nothing.
Call of Duty: Warzone leans Execution (Grand Arena); Insurgency leans Execution (Competitive PvP).
Call of Duty: Warzone leans a little harder on execution, though the gap is small.
Call of Duty: Warzone
Long-range gunfights reward perfect aim
Insurgency
One-shot lethality rewards precise aim
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Call of Duty: Warzone
Rotations and third-party reads decide fights
Insurgency
Human squads flank and adapt each round
Call of Duty: Warzone leans clearly harder on variance.
Call of Duty: Warzone
Drops, loot, circles inject real RNG
Insurgency
No killcam or HUD hides enemy positions
Call of Duty: Warzone leans clearly harder on optimization.
Call of Duty: Warzone
Meta loadouts and rotations heavily solved
Insurgency
Loadout points and objective route knowledge
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.