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

Execution · Pure Mechanics
Linear military FPS about resisting an occupation of the United States.

Execution · Pure Mechanics
A 3D platformer whose joy lives in tight movement and capture-driven traversal.
Homefront leans Execution (Pure Mechanics); Super Mario Odyssey leans Execution (Pure Mechanics).
Super Mario Odyssey leans clearly harder on execution.
Homefront
Standard shooter gunplay carries the campaign
Super Mario Odyssey
Precise platforming and capture-move tech ceiling.
Homefront leans clearly harder on reads.
Homefront
Multiplayer adds some human prediction
Super Mario Odyssey
No adaptive opponents whatsoever.
Homefront leans a little harder on variance, though the gap is small.
Homefront
Scripted setpieces, little randomness
Super Mario Odyssey
Almost no randomness in level design.
Super Mario Odyssey leans clearly harder on optimization.
Homefront
Modest loadout and map knowledge layer
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.