head to head
Neither is simply harder - they are hard in different places. Outlaw demands more reads; Super Mario World demands more optimization.

Execution · Pure Mechanics
An early top-down shootout game testing precise aim against a human opponent.

Execution · Pure Mechanics
Precise jump execution across fixed levels with secrets to memorise.
Outlaw leans Execution (Pure Mechanics); Super Mario World 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.
Outlaw
precise aiming and movement in duels
Super Mario World
Perfect inputs trivialise every jump, spin and cape flight
Outlaw leans clearly harder on reads.
Outlaw
human opponents adapt dueling tactics
Super Mario World
Scripted Koopas adapt to nothing
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Outlaw
minimal randomness in shootouts
Super Mario World
Levels are fixed; nothing hidden survives one playthrough
Super Mario World leans clearly harder on optimization.
Outlaw
minimal system depth
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.