head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is execution, and it is a single point.

Execution · Pure Mechanics
Pure reaction timing - two buttons, escalating speed, zero forgiveness for mashing.

Execution · Pure Mechanics
Classic Tetris execution under audiovisual flow, speed still decides everything.
One Finger Death Punch 2 leans Execution (Pure Mechanics); Tetris Effect leans Execution (Pure Mechanics).
One Finger Death Punch 2 leans a little harder on execution, though the gap is small.
One Finger Death Punch 2
Two-button precision timing at extreme speed is everything
Tetris Effect
Piece placement under speed and Zone timing is the whole test
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
One Finger Death Punch 2
Enemy approach cues are fully telegraphed scripts
Tetris Effect
Solo experience with no opponent to model
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
One Finger Death Punch 2
Wave composition shuffles slightly between rounds
Tetris Effect
Randomised bag is bounded and quickly mappable
Tetris Effect leans a little harder on optimization, though the gap is small.
One Finger Death Punch 2
Skill loadouts and restraint from mashing form light strategy
Tetris Effect
Stacking theory and Zone usage have known optimal lines
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.