head to head
Super Monkey Ball 3D asks more than Super Mario World, and the gap is execution.

Execution · Pure Mechanics
Precise jump execution across fixed levels with secrets to memorise.

Execution · Pure Mechanics
A tilt-control balance game about rolling precisely through floating mazes.
Super Mario World leans Execution (Pure Mechanics); Super Monkey Ball 3D leans Execution (Pure Mechanics).
Super Monkey Ball 3D leans clearly harder on execution.
Super Mario World
Perfect inputs trivialise every jump, spin and cape flight
Super Monkey Ball 3D
Precise tilt control under gravity is the entire test
Super Monkey Ball 3D leans a little harder on reads, though the gap is small.
Super Mario World
Scripted Koopas adapt to nothing
Super Monkey Ball 3D
Solo stages, no opponent to predict
Super Monkey Ball 3D leans a little harder on variance, though the gap is small.
Super Mario World
Levels are fixed; nothing hidden survives one playthrough
Super Monkey Ball 3D
Levels are fixed with little randomness
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Super Mario World
Secret exits and route knowledge add a modest solvable layer
Super Monkey Ball 3D
Optimal lines through mazes reward route learning
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.