head to head
Micro Machines World Series asks more than The Need for Speed, and the gap is reads.

Execution · Pure Mechanics
Twitchy miniature racing where handling beats strategy on chaotic tabletop tracks.

Execution · Pure Mechanics
Holding clean lines at speed through traffic on memorisable point-to-point roads.
Micro Machines World Series leans Execution (Pure Mechanics); The Need for Speed 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 World Series
Tiny-car handling on cramped tabletop tracks is twitch-heavy
The Need for Speed
Holding racing lines at speed through traffic is the test
Micro Machines World Series leans clearly harder on reads.
Micro Machines World Series
Human racers can be baited with weapons and blocks
The Need for Speed
AI rivals and police follow fixed behaviour
Micro Machines World Series leans a little harder on variance, though the gap is small.
Micro Machines World Series
Pickup spawns and battle chaos add randomness
The Need for Speed
Traffic patterns add mild run-to-run noise
The Need for Speed leans a little harder on optimization, though the gap is small.
Micro Machines World Series
Track knowledge is shallow and learned quickly
The Need for Speed
Track knowledge and car choice settle quickly
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.