head to head
Super Mario World asks more than Donkey Kong Junior, and the gap is optimization.

Execution · Pure Mechanics
An early arcade climber demanding tight, repeatable jump execution.

Execution · Pure Mechanics
Precise jump execution across fixed levels with secrets to memorise.
Donkey Kong Junior leans Execution (Pure Mechanics); Super Mario World leans Execution (Pure Mechanics).
Donkey Kong Junior leans a little harder on execution, though the gap is small.
Donkey Kong Junior
precise vine-climbing and jump timing
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.
Donkey Kong Junior
enemies follow fixed patrol patterns
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.
Donkey Kong Junior
minor enemy timing variance
Super Mario World
Levels are fixed; nothing hidden survives one playthrough
Super Mario World leans clearly harder on optimization.
Donkey Kong Junior
minimal route memorization needed
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.