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

Execution · Practiced Mastery
The handheld Mario Kart blending SNES-style handling with item-fueled races.

Execution · Practiced Mastery
A twin-stick action shooter testing aim and crowd control against scripted hordes.
Mario Kart: Super Circuit leans Execution (Practiced Mastery); Warhammer 40,000: Kill Team leans Execution (Practiced Mastery).
Mario Kart: Super Circuit leans a little harder on execution, though the gap is small.
Mario Kart: Super Circuit
Snappy GBA handling rewards precise drift control
Warhammer 40,000: Kill Team
Twin-stick aiming and dodging waves is the action core
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Mario Kart: Super Circuit
Mostly AI races, light link-cable PvP
Warhammer 40,000: Kill Team
Enemy hordes are scripted, not adapting minds
Mario Kart: Super Circuit leans a little harder on variance, though the gap is small.
Mario Kart: Super Circuit
Item boxes randomise every race
Warhammer 40,000: Kill Team
Enemy spawns and drops add bounded randomness
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Mario Kart: Super Circuit
Time-trial lines and shortcut routes
Warhammer 40,000: Kill Team
Class abilities and upgrade paths reward planning
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.