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
Tests execution against dense scripted boss patterns in handheld run-and-gun form.

Execution · Pure Mechanics
Precise jump execution across fixed levels with secrets to memorise.
Gunstar Super Heroes leans Execution (Pure Mechanics); Super Mario World leans Execution (Pure Mechanics).
Gunstar Super Heroes leans a little harder on execution, though the gap is small.
Gunstar Super Heroes
Dense run-and-gun action demands precise dodging and weapon control
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.
Gunstar Super Heroes
Boss patterns are elaborate but completely scripted
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.
Gunstar Super Heroes
Stages play out identically each run
Super Mario World
Levels are fixed; nothing hidden survives one playthrough
Gunstar Super Heroes leans a little harder on optimization, though the gap is small.
Gunstar Super Heroes
Learning screen-filling boss movesets is the core progression
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.