head to head
Left 4 Dead asks more than Walt Disney World Quest: Magical Racing Tour, and the gap is execution.

Execution · Twitch Chaos
Co-op zombie shooter whose AI Director reshuffles every run to keep teams honest.

Execution · Twitch Chaos
A Disney kart racer testing modest driving skill under item-luck swings.
Left 4 Dead leans Execution (Twitch Chaos); Walt Disney World Quest: Magical Racing Tour leans Execution (Twitch Chaos).
Left 4 Dead leans clearly harder on execution.
Left 4 Dead
Headshots, melee shoves, and special-infected reaction time
Walt Disney World Quest: Magical Racing Tour
Kart handling and drift timing are the main skill
Left 4 Dead leans a little harder on reads, though the gap is small.
Left 4 Dead
Versus mode adds human ambush mindgames
Walt Disney World Quest: Magical Racing Tour
AI racers follow rubber-band scripts
Left 4 Dead leans clearly harder on variance.
Left 4 Dead
AI Director randomizes hordes, items, and specials
Walt Disney World Quest: Magical Racing Tour
Item pickups shuffle race outcomes
Left 4 Dead leans clearly harder on optimization.
Left 4 Dead
Team spacing, route choice, and resource discipline
Walt Disney World Quest: Magical Racing Tour
Track shortcuts and coin lines reward course knowledge
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.