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 · Pure Mechanics
A marble-rolling platformer testing precise physics control for record times.

Execution · Practiced Mastery
NES platformer that codified boss-weakness ordering and tight jump-and-shoot play.
Marble It Up! leans Execution (Pure Mechanics); Mega Man 2 leans Execution (Practiced Mastery).
Marble It Up! leans a little harder on execution, though the gap is small.
Marble It Up!
Frame-perfect marble control and boosting decide every run
Mega Man 2
precise jumps and boss dodges under pressure
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Marble It Up!
Solo time-trials - no opponent to predict
Mega Man 2
robot masters follow strict patterns
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Marble It Up!
Physics are deterministic, nothing random
Mega Man 2
deterministic once stage layouts known
Mega Man 2 leans a little harder on optimization, though the gap is small.
Marble It Up!
Finding optimal lines for record times rewards mastery
Mega Man 2
weapon-weakness ordering is the classic solve
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.