head to head
Mario Kart 64 asks more than Runbow, and the gap is optimization.

Execution · Twitch Chaos
N64 couch classic where blue shells and shortcuts decide friendships.

Execution · Pure Mechanics
Reaction-speed platform racing where shifting colours keep redrawing the level under you.
Mario Kart 64 leans Execution (Twitch Chaos); Runbow leans Execution (Pure Mechanics).
Runbow leans a little harder on execution, though the gap is small.
Mario Kart 64
Mini-turbo snaking and shortcut execution
Runbow
Fast platform racing through vanishing platforms is pure reaction
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Mario Kart 64
Couch rivals bait shells and fakes
Runbow
Light jostling with human racers, but little deep prediction
Mario Kart 64 leans a little harder on variance, though the gap is small.
Mario Kart 64
Item draws swing every race
Runbow
Colour swaps and party chaos randomise each race
Mario Kart 64 leans clearly harder on optimization.
Mario Kart 64
Shortcut and line knowledge is fully mapped
Runbow
Minimal systems - momentum tricks and level memory only
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.