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

Execution · Competitive PvP
First-person medieval melee where feints and drags duel human reads.

Execution · Competitive PvP
Hardcore team shooter where one bullet kills and the HUD tells you nothing.
Chivalry: Medieval Warfare leans Execution (Competitive PvP); Insurgency 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.
Chivalry: Medieval Warfare
Swing manipulation, footwork, and parry timing
Insurgency
One-shot lethality rewards precise aim
Chivalry: Medieval Warfare leans a little harder on reads, though the gap is small.
Chivalry: Medieval Warfare
Feints and drags against adapting humans
Insurgency
Human squads flank and adapt each round
Insurgency leans a little harder on variance, though the gap is small.
Chivalry: Medieval Warfare
Battlefield chaos with many players
Insurgency
No killcam or HUD hides enemy positions
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Chivalry: Medieval Warfare
Class loadouts and objective knowledge
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.