head to head
Rocket League asks more than Micro Machines, and the gap is execution.

Execution · Pure Mechanics
Tests precise steering on cramped miniature tracks where one slip means falling off the table.

Execution · Pure Mechanics
Mechanical car-soccer where execution is the ceiling.
Micro Machines leans Execution (Pure Mechanics); Rocket League leans Execution (Pure Mechanics).
Rocket League leans clearly harder on execution.
Micro Machines
Tiny cars on twisty tabletop tracks demand constant precise steering
Rocket League
Aerials, flicks, dribbles, pure mechanical ceiling
Rocket League leans clearly harder on reads.
Micro Machines
Local multiplayer screen-edge duels reward predicting rivals' lines
Rocket League
Rotations and 50-50 reads against humans
Micro Machines leans a little harder on variance, though the gap is small.
Micro Machines
Tracks are fixed; little randomness beyond AI bumping
Rocket League
Almost deterministic physics
Micro Machines leans a little harder on optimization, though the gap is small.
Micro Machines
Learning each track's racing line and shortcuts pays off
Rocket League
Training routines, rotation theory
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.