head to head
TrackMania 2: Stadium 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
Grinding deterministic tracks for the perfect line and the flawless run.
Super Mario World leans Execution (Pure Mechanics); TrackMania 2: Stadium leans Execution (Pure Mechanics).
TrackMania 2: Stadium leans clearly harder on execution.
Super Mario World
Perfect inputs trivialise every jump, spin and cape flight
TrackMania 2: Stadium
Perfect inputs ARE the game - hundredths decide leaderboards
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Super Mario World
Scripted Koopas adapt to nothing
TrackMania 2: Stadium
Ghost racing - opponents never interact with your run
Super Mario World leans a little harder on variance, though the gap is small.
Super Mario World
Levels are fixed; nothing hidden survives one playthrough
TrackMania 2: Stadium
Fully deterministic physics, identical track every attempt
TrackMania 2: Stadium leans clearly harder on optimization.
Super Mario World
Secret exits and route knowledge add a modest solvable layer
TrackMania 2: Stadium
Finding the optimal racing line is half the hunt
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.