head to head
Tetris 99 asks more than Super Mario Odyssey, and the gap is reads.

Execution · Pure Mechanics
A 3D platformer whose joy lives in tight movement and capture-driven traversal.

Execution · Pure Mechanics
Battle royale Tetris where raw stacking speed decides who outlasts 98 opponents.
Super Mario Odyssey leans Execution (Pure Mechanics); Tetris 99 leans Execution (Pure Mechanics).
Tetris 99 leans a little harder on execution, though the gap is small.
Super Mario Odyssey
Precise platforming and capture-move tech ceiling.
Tetris 99
High-speed stacking and finesse define survival
Tetris 99 leans clearly harder on reads.
Super Mario Odyssey
No adaptive opponents whatsoever.
Tetris 99
Targeting and badge timing against humans matter mid-match
Tetris 99 leans clearly harder on variance.
Super Mario Odyssey
Almost no randomness in level design.
Tetris 99
Incoming garbage timing and piece sequence add chaos
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Super Mario Odyssey
Moon routes and movement tech learnable.
Tetris 99
Stacking theory and downstack efficiency are studied skills
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.