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
An Arabian Nights first-person roguelite about whipping enemies into the city's own traps.

Execution · Twitch Chaos
A kart racer where controlled chaos from random items tempers otherwise precise driving skill.
City of Brass 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.
City of Brass
Whip-and-sword timing against traps demands reflexes
Mario Kart 8
precise drifting and item timing matter
Mario Kart 8 leans a little harder on reads, though the gap is small.
City of Brass
Enemies and traps are scripted
Mario Kart 8
minimal, mostly reacting not predicting
Mario Kart 8 leans a little harder on variance, though the gap is small.
City of Brass
Procedural streets, relics, and genie wares vary runs
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.
City of Brass
Trap manipulation and treasure routing reward learned play
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.