head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is execution, and it is a single point.

Execution · Pure Mechanics
A pure reflex runner of split-second jumps inside a rotating particle accelerator.

Execution · Pure Mechanics
Precise jump execution across fixed levels with secrets to memorise.
Boson X leans Execution (Pure Mechanics); Super Mario World leans Execution (Pure Mechanics).
Boson X leans a little harder on execution, though the gap is small.
Boson X
Split-second jumps in a rotating tunnel are the entire game
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.
Boson X
No opponent - just oncoming geometry
Super Mario World
Scripted Koopas adapt to nothing
Boson X leans a little harder on variance, though the gap is small.
Boson X
Platform sequences are randomized but pattern-bounded
Super Mario World
Levels are fixed; nothing hidden survives one playthrough
Super Mario World leans a little harder on optimization, though the gap is small.
Boson X
Blue-platform risk choices have a thin strategic layer
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.