head to head
Mario Kart 8 asks more than Walt Disney World Quest: Magical Racing Tour, and the gap is variance.

Execution · Twitch Chaos
A kart racer where controlled chaos from random items tempers otherwise precise driving skill.

Execution · Twitch Chaos
A Disney kart racer testing modest driving skill under item-luck swings.
Mario Kart 8 leans Execution (Twitch Chaos); Walt Disney World Quest: Magical Racing Tour leans Execution (Twitch Chaos).
Mario Kart 8 leans a little harder on execution, though the gap is small.
Mario Kart 8
precise drifting and item timing matter
Walt Disney World Quest: Magical Racing Tour
Kart handling and drift timing are the main skill
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Mario Kart 8
minimal, mostly reacting not predicting
Walt Disney World Quest: Magical Racing Tour
AI racers follow rubber-band scripts
Mario Kart 8 leans clearly harder on variance.
Mario Kart 8
item boxes are heavily randomized
Walt Disney World Quest: Magical Racing Tour
Item pickups shuffle race outcomes
Mario Kart 8 leans clearly harder on optimization.
Mario Kart 8
track lines and item strategy solvable
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.