head to head
Castlevania III: Dracula's Curse asks more than Super Mario World, and the gap is execution.

Execution · Pure Mechanics
The hardest NES Castlevania, with branching routes and switchable partner characters.

Execution · Pure Mechanics
Precise jump execution across fixed levels with secrets to memorise.
Castlevania III: Dracula's Curse leans Execution (Pure Mechanics); Super Mario World leans Execution (Pure Mechanics).
Castlevania III: Dracula's Curse leans clearly harder on execution.
Castlevania III: Dracula's Curse
Brutal platforming and tight whip timing throughout
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.
Castlevania III: Dracula's Curse
Scripted enemies and bosses only
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.
Castlevania III: Dracula's Curse
Minor enemy spawn wobble
Super Mario World
Levels are fixed; nothing hidden survives one playthrough
Castlevania III: Dracula's Curse leans clearly harder on optimization.
Castlevania III: Dracula's Curse
Partner choice, route branching, pattern memory
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.