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

Execution · Pure Mechanics
Twitch top-down driving and weapon chaos against friends on a couch.

Execution · Pure Mechanics
A 3D platformer whose joy lives in tight movement and capture-driven traversal.
Mashed: Drive to Survive 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.
Mashed: Drive to Survive
Top-down cornering at speed while aiming weapons is twitchy
Super Mario Odyssey
Precise platforming and capture-move tech ceiling.
Mashed: Drive to Survive leans clearly harder on reads.
Mashed: Drive to Survive
Couch rivals bait blocks and time weapon strikes
Super Mario Odyssey
No adaptive opponents whatsoever.
Mashed: Drive to Survive leans clearly harder on variance.
Mashed: Drive to Survive
Weapon pickups and missile strikes add party chaos
Super Mario Odyssey
Almost no randomness in level design.
Super Mario Odyssey leans clearly harder on optimization.
Mashed: Drive to Survive
Track knowledge helps but stays shallow by design
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.