head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Execution · Twitch Chaos
A kart racer testing drift execution amid item-driven randomness.

Execution · Twitch Chaos
N64 couch classic where blue shells and shortcuts decide friendships.
Garfield Kart leans Execution (Twitch Chaos); Mario Kart 64 leans Execution (Twitch Chaos).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Garfield Kart
Drifting and racing lines need precise control
Mario Kart 64
Mini-turbo snaking and shortcut execution
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Garfield Kart
Light multiplayer item-timing prediction against humans
Mario Kart 64
Couch rivals bait shells and fakes
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Garfield Kart
Random item pickups swing race outcomes
Mario Kart 64
Item draws swing every race
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Garfield Kart
Shortcut routing and item management reward planning
Mario Kart 64
Shortcut and line knowledge is fully mapped
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.