head to head
Call of Duty: Modern Warfare 3 asks more than Maiden & Spell, and the gap is reads.

Execution · Pure Mechanics
A fast-paced military shooter where twitch aim against other players is the core test.

Execution · Pure Mechanics
A competitive bullet-hell duel game about dodging dense patterns and shooting opponents.
Call of Duty: Modern Warfare 3 leans Execution (Pure Mechanics); Maiden & Spell 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: Modern Warfare 3
aim and reflexes decide most engagements
Maiden & Spell
Bullet-hell dodging and precise shooting define every duel
Call of Duty: Modern Warfare 3 leans clearly harder on reads.
Call of Duty: Modern Warfare 3
predicting human opponent positioning and habits
Maiden & Spell
Human opponents in versus add prediction layer
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Call of Duty: Modern Warfare 3
spawn placement and loadout drops vary
Maiden & Spell
Patterns are largely fixed and memorizable
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Call of Duty: Modern Warfare 3
loadout tuning and map knowledge help
Maiden & Spell
Learning bullet patterns and pickup routes helps
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.