head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Execution · Pure Mechanics
A futuristic Call of Duty whose exoskeleton boosts made aerial movement king.

Execution · Pure Mechanics
A competitive kart racer testing drift-boost execution against human rivals.
Call of Duty: Advanced Warfare leans Execution (Pure Mechanics); Crazyracing Kartrider leans Execution (Pure Mechanics).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Call of Duty: Advanced Warfare
Exo boost-dodging raises the mechanical ceiling sharply
Crazyracing Kartrider
Drift-boost timing and tight cornering define lap speed
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Call of Duty: Advanced Warfare
Predicting human boost paths wins gunfights
Crazyracing Kartrider
Reading rival lines and item timing matters in PvP
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Call of Duty: Advanced Warfare
Spawns and supply-drop loot add randomness
Crazyracing Kartrider
Item pickups add some randomness to races
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Call of Duty: Advanced Warfare
Movement tech and class builds are learnable
Crazyracing Kartrider
Track lines, drift chaining, and item usage are 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.