head to head
Neither is simply harder - they are hard in different places. Micro Machines 2: Turbo Tournament demands more reads; Super Mario Odyssey demands more optimization.

Execution · Pure Mechanics
Twitchy miniature racing where screen-edge duels punish imprecise hands.

Execution · Pure Mechanics
A 3D platformer whose joy lives in tight movement and capture-driven traversal.
Micro Machines 2: Turbo Tournament 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.
Micro Machines 2: Turbo Tournament
Twitchy top-down handling on tabletop tracks is the core test
Super Mario Odyssey
Precise platforming and capture-move tech ceiling.
Micro Machines 2: Turbo Tournament leans clearly harder on reads.
Micro Machines 2: Turbo Tournament
Screen-edge duels reward predicting human rivals' lines
Super Mario Odyssey
No adaptive opponents whatsoever.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Micro Machines 2: Turbo Tournament
Tracks fixed, almost nothing random
Super Mario Odyssey
Almost no randomness in level design.
Super Mario Odyssey leans clearly harder on optimization.
Micro Machines 2: Turbo Tournament
Memorising shortcuts and racing lines per track
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.