head to head
Micro Machines V3 asks more than Super Mario World, and the gap is reads.

Execution · Pure Mechanics
Tests twitchy miniature car control and track memory amid party-weapon chaos.

Execution · Pure Mechanics
Precise jump execution across fixed levels with secrets to memorise.
Micro Machines V3 leans Execution (Pure Mechanics); Super Mario World leans Execution (Pure Mechanics).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Micro Machines V3
Tiny cars on twisty tabletops punish every slip
Super Mario World
Perfect inputs trivialise every jump, spin and cape flight
Micro Machines V3 leans clearly harder on reads.
Micro Machines V3
Couch rivals can be baited with weapons and nudges
Super Mario World
Scripted Koopas adapt to nothing
Micro Machines V3 leans clearly harder on variance.
Micro Machines V3
Pickup spawns and chaos shuffle close races
Super Mario World
Levels are fixed; nothing hidden survives one playthrough
Super Mario World leans a little harder on optimization, though the gap is small.
Micro Machines V3
Track memorisation and shortcut lines pay off
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.