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

Execution · Pure Mechanics
VR rhythm game about slicing color-coded blocks to music with lightsabers.

Execution · Pure Mechanics
Precise jump execution across fixed levels with secrets to memorise.
Beat Saber leans Execution (Pure Mechanics); Super Mario World leans Execution (Pure Mechanics).
Beat Saber leans clearly harder on execution.
Beat Saber
Pure full-body rhythm precision at speed
Super Mario World
Perfect inputs trivialise every jump, spin and cape flight
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Beat Saber
No opponent of any kind
Super Mario World
Scripted Koopas adapt to nothing
Super Mario World leans a little harder on variance, though the gap is small.
Beat Saber
Patterns are fully known and fixed
Super Mario World
Levels are fixed; nothing hidden survives one playthrough
Super Mario World leans clearly harder on optimization.
Beat Saber
Swing-angle scoring technique and map memorization
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.