head to head
ARC Raiders asks more than Mario Kart World, and the gap is reads.

Execution · Grand Arena
An extraction shooter where scavengers dodge killer machines and rival squads for loot.

Execution · Twitch Chaos
Kart racing blending drift execution with item RNG and pack positioning.
ARC Raiders leans Execution (Grand Arena); Mario Kart World leans Execution (Twitch Chaos).
ARC Raiders leans a little harder on execution, though the gap is small.
ARC Raiders
Gunplay and movement under machine fire
Mario Kart World
Drift charging, rail grinding and shortcut precision reward hands
ARC Raiders leans clearly harder on reads.
ARC Raiders
Rival squads ambush, bait, and adapt
Mario Kart World
Human racers bait items and contest lines in knockouts
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
ARC Raiders
Loot spawns and unknown player positions
Mario Kart World
Item rolls and rubber-banding scramble any single race
ARC Raiders leans a little harder on optimization, though the gap is small.
ARC Raiders
Loadout economy and map knowledge compound
Mario Kart World
Course knowledge, shortcuts and item management converge with study
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.