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

Execution · Competitive PvP
Hardcore medieval melee combat sim.
Chivalry: Medieval Warfare leans Execution (Competitive PvP); Mordhau leans Execution (Competitive PvP).
Mordhau leans a little harder on execution, though the gap is small.
Chivalry: Medieval Warfare
Swing manipulation, footwork, and parry timing
Mordhau
Drag-and-accel swings are mechanical depth
Mordhau leans a little harder on reads, though the gap is small.
Chivalry: Medieval Warfare
Feints and drags against adapting humans
Mordhau
Feints versus parries are pure reads
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Chivalry: Medieval Warfare
Battlefield chaos with many players
Mordhau
Very low RNG, near pure skill
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
Mordhau
Loadout points and perks solvable
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.