head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is reads, and it is a single point.

Execution · Twitch Chaos
Kiting hordes through procedural floors while building around random loot.

Execution · Twitch Chaos
A kart racer where controlled chaos from random items tempers otherwise precise driving skill.
Dungeon Souls leans Execution (Twitch Chaos); Mario Kart 8 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.
Dungeon Souls
Dodging dense enemy hordes demands constant kiting
Mario Kart 8
precise drifting and item timing matter
Mario Kart 8 leans a little harder on reads, though the gap is small.
Dungeon Souls
Monsters swarm by script, not strategy
Mario Kart 8
minimal, mostly reacting not predicting
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Dungeon Souls
Procedural floors and random loot reshape every run
Mario Kart 8
item boxes are heavily randomized
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Dungeon Souls
Character builds and unlock knowledge converge with experience
Mario Kart 8
track lines and item strategy solvable
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.