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

Variance · Pure Chaos
Tests nothing but luck - a spectator marble race decided entirely by physics RNG.

Variance · Pure Chaos
A dice-tapping engagement loop where randomness, not skill, drives everything.
Marbles on Stream leans Variance (Pure Chaos); Monopoly Go! leans Variance (Pure Chaos).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Marbles on Stream
You watch a marble roll; no inputs matter
Monopoly Go!
Tapping to roll dice takes nothing
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Marbles on Stream
No opponent decisions exist to predict
Monopoly Go!
Other players cannot be outpredicted - dice decide
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Marbles on Stream
Physics RNG decides the entire race outcome
Monopoly Go!
Dice rolls and event rewards are the entire engine
Monopoly Go! leans a little harder on optimization, though the gap is small.
Marbles on Stream
Nothing to solve beyond picking a marble skin
Monopoly Go!
Minor timing of boosts barely moves outcomes
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.