head to head
Halo 3 asks more than Super Mario World, and the gap is reads.

Execution · Pure Mechanics
Trilogy capstone whose equal-start arena multiplayer defined a console generation.

Execution · Pure Mechanics
Precise jump execution across fixed levels with secrets to memorise.
Halo 3 leans Execution (Pure Mechanics); Super Mario World leans Execution (Pure Mechanics).
Halo 3 leans a little harder on execution, though the gap is small.
Halo 3
Precision aim and grenade-melee timing
Super Mario World
Perfect inputs trivialise every jump, spin and cape flight
Halo 3 leans clearly harder on reads.
Halo 3
Equal-start fights reward predicting humans
Super Mario World
Scripted Koopas adapt to nothing
Halo 3 leans a little harder on variance, though the gap is small.
Halo 3
Equipment pickups and spawn variation
Super Mario World
Levels are fixed; nothing hidden survives one playthrough
Halo 3 leans a little harder on optimization, though the gap is small.
Halo 3
Power-weapon timers and map control
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.