head to head
Nuclear Throne asks more than Mario Kart 8, and the gap is execution.

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

Execution · Twitch Chaos
Frenetic twin-stick roguelike where mutant builds meet unforgiving bullet dodging.
Mario Kart 8 leans Execution (Twitch Chaos); Nuclear Throne leans Execution (Twitch Chaos).
Nuclear Throne leans clearly harder on execution.
Mario Kart 8
precise drifting and item timing matter
Nuclear Throne
Twin-stick dodging in dense bullet chaos
Mario Kart 8 leans a little harder on reads, though the gap is small.
Mario Kart 8
minimal, mostly reacting not predicting
Nuclear Throne
Enemies follow fixed behaviors
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Mario Kart 8
item boxes are heavily randomized
Nuclear Throne
Weapon drops, mutations, and level generation per run
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Mario Kart 8
track lines and item strategy solvable
Nuclear Throne
Mutation synergies and crown-route 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.