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

Execution · Pure Mechanics
Arcade hockey reflexes with light shot-angle guessing against human opponents.

Execution · Pure Mechanics
A 3D platformer whose joy lives in tight movement and capture-driven traversal.
Blades of Steel 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.
Blades of Steel
Skating, passing and shot timing decide every rush
Super Mario Odyssey
Precise platforming and capture-move tech ceiling.
Blades of Steel leans clearly harder on reads.
Blades of Steel
Versus a human, goalie duels become guessing games
Super Mario Odyssey
No adaptive opponents whatsoever.
Blades of Steel leans a little harder on variance, though the gap is small.
Blades of Steel
Fights and bounces add small arcade chaos
Super Mario Odyssey
Almost no randomness in level design.
Super Mario Odyssey leans clearly harder on optimization.
Blades of Steel
Angle exploits on the goalie are quickly mapped
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.