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.

Variance · Pure Chaos
A scripted horror experience whose only test is tolerating the unknown.

Variance · Pure Chaos
Tests nothing but luck - a spectator marble race decided entirely by physics RNG.
KinitoPet leans Variance (Pure Chaos); Marbles on Stream leans Variance (Pure Chaos).
KinitoPet leans a little harder on execution, though the gap is small.
KinitoPet
Clicking through a fake assistant needs no skill
Marbles on Stream
You watch a marble roll; no inputs matter
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
KinitoPet
Kinito's 'adaptiveness' is scripted horror theatre
Marbles on Stream
No opponent decisions exist to predict
Marbles on Stream leans a little harder on variance, though the gap is small.
KinitoPet
The experience trades entirely on not knowing what's next
Marbles on Stream
Physics RNG decides the entire race outcome
KinitoPet leans a little harder on optimization, though the gap is small.
KinitoPet
Minigame puzzles are trivial set dressing
Marbles on Stream
Nothing to solve beyond picking a marble skin
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.