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
Classic Tetris execution under audiovisual flow, speed still decides everything.

Execution · Pure Mechanics
A falling-block puzzle game about fast, precise stacking under increasing speed.
Tetris Effect leans Execution (Pure Mechanics); Tetris Evolution leans Execution (Pure Mechanics).
Tetris Evolution leans a little harder on execution, though the gap is small.
Tetris Effect
Piece placement under speed and Zone timing is the whole test
Tetris Evolution
fast, precise piece placement under speed
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Tetris Effect
Solo experience with no opponent to model
Tetris Evolution
no opponent modeling in core mode
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Tetris Effect
Randomised bag is bounded and quickly mappable
Tetris Evolution
piece sequence randomness
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Tetris Effect
Stacking theory and Zone usage have known optimal lines
Tetris Evolution
optimal stacking and clearing strategy
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.