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

Variance · Grand Arena
Hardcore survival sandbox where other players are scarier than the zombies.

Execution · Twitch Chaos
Kart racing blending drift execution with item RNG and pack positioning.
DayZ leans Variance (Grand Arena); Mario Kart World 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.
DayZ
gunfights punish slow hands severely
Mario Kart World
Drift charging, rail grinding and shortcut precision reward hands
DayZ leans clearly harder on reads.
DayZ
every survivor met may lie, ambush, or befriend
Mario Kart World
Human racers bait items and contest lines in knockouts
DayZ leans a little harder on variance, though the gap is small.
DayZ
loot spawns and who you meet are unknowable
Mario Kart World
Item rolls and rubber-banding scramble any single race
DayZ leans a little harder on optimization, though the gap is small.
DayZ
map knowledge and survival routines 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.