head to head
Neither is simply harder - they are hard in different places. Runbow demands more reads; Super Mario Odyssey demands more optimization.

Execution · Pure Mechanics
Reaction-speed platform racing where shifting colours keep redrawing the level under you.

Execution · Pure Mechanics
A 3D platformer whose joy lives in tight movement and capture-driven traversal.
Runbow leans Execution (Pure Mechanics); Super Mario Odyssey leans Execution (Pure Mechanics).
Super Mario Odyssey leans a little harder on execution, though the gap is small.
Runbow
Fast platform racing through vanishing platforms is pure reaction
Super Mario Odyssey
Precise platforming and capture-move tech ceiling.
Runbow leans clearly harder on reads.
Runbow
Light jostling with human racers, but little deep prediction
Super Mario Odyssey
No adaptive opponents whatsoever.
Runbow leans clearly harder on variance.
Runbow
Colour swaps and party chaos randomise each race
Super Mario Odyssey
Almost no randomness in level design.
Super Mario Odyssey leans clearly harder on optimization.
Runbow
Minimal systems - momentum tricks and level memory only
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.