head to head
Returnal asks more than Mario Kart 64, and the gap is execution.

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

Execution · Twitch Chaos
Bullet-hell roguelike third-person shooter.
Mario Kart 64 leans Execution (Twitch Chaos); Returnal leans Execution (Twitch Chaos).
Returnal leans clearly harder on execution.
Mario Kart 64
Mini-turbo snaking and shortcut execution
Returnal
Bullet-hell dodge and aim under pressure
Mario Kart 64 leans a little harder on reads, though the gap is small.
Mario Kart 64
Couch rivals bait shells and fakes
Returnal
Bosses scripted, patterns not adaptive
Returnal leans clearly harder on variance.
Mario Kart 64
Item draws swing every race
Returnal
Room layouts, parasites, items roguelike
Returnal leans clearly harder on optimization.
Mario Kart 64
Shortcut and line knowledge is fully mapped
Returnal
Build synergies and route planning
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.