head to head
Super Mario Odyssey asks more than Rhythm Heaven Megamix, and the gap is optimization.

Execution · Pure Mechanics
Pure rhythmic timing against fixed musical cues, minigame after minigame.

Execution · Pure Mechanics
A 3D platformer whose joy lives in tight movement and capture-driven traversal.
Rhythm Heaven Megamix leans Execution (Pure Mechanics); Super Mario Odyssey leans Execution (Pure Mechanics).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Rhythm Heaven Megamix
Beat-perfect input timing is the entire test
Super Mario Odyssey
Precise platforming and capture-move tech ceiling.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Rhythm Heaven Megamix
No opponent - only the music
Super Mario Odyssey
No adaptive opponents whatsoever.
Super Mario Odyssey leans a little harder on variance, though the gap is small.
Rhythm Heaven Megamix
Every minigame plays identically each attempt
Super Mario Odyssey
Almost no randomness in level design.
Super Mario Odyssey leans clearly harder on optimization.
Rhythm Heaven Megamix
Cues are learned quickly; timing remains the wall
Super Mario Odyssey
Moon routes and movement tech learnable.
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.