head to head
Call of Duty: Modern Warfare 3 asks more than Super Mario World, 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
Precise jump execution across fixed levels with secrets to memorise.
Call of Duty: Modern Warfare 3 leans Execution (Pure Mechanics); Super Mario World leans Execution (Pure Mechanics).
Call of Duty: Modern Warfare 3 leans clearly harder on execution.
Call of Duty: Modern Warfare 3
aim and reflexes decide most engagements
Super Mario World
Perfect inputs trivialise every jump, spin and cape flight
Call of Duty: Modern Warfare 3 leans clearly harder on reads.
Call of Duty: Modern Warfare 3
predicting human opponent positioning and habits
Super Mario World
Scripted Koopas adapt to nothing
Call of Duty: Modern Warfare 3 leans a little harder on variance, though the gap is small.
Call of Duty: Modern Warfare 3
spawn placement and loadout drops vary
Super Mario World
Levels are fixed; nothing hidden survives one playthrough
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
Super Mario World
Secret exits and route knowledge add a modest solvable layer
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.