head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is execution, and it is a single point.

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

Execution · Twitch Chaos
Sloppy kart handling where random items swing races more than driving skill.
Mario Kart 64 leans Execution (Twitch Chaos); South Park Rally leans Execution (Twitch Chaos).
Mario Kart 64 leans a little harder on execution, though the gap is small.
Mario Kart 64
Mini-turbo snaking and shortcut execution
South Park Rally
Loose kart handling still rewards clean driving
Mario Kart 64 leans a little harder on reads, though the gap is small.
Mario Kart 64
Couch rivals bait shells and fakes
South Park Rally
Human racers in versus add slight prediction
Mario Kart 64 leans a little harder on variance, though the gap is small.
Mario Kart 64
Item draws swing every race
South Park Rally
Random weapon pickups swing race outcomes
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Mario Kart 64
Shortcut and line knowledge is fully mapped
South Park Rally
Track shortcuts and item timing are learnable
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.