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

Execution · Pure Mechanics
A bullet-hell shooter testing precise dodging through scripted Korean-mythology patterns.

Execution · Pure Mechanics
The classic execution-under-acceleration test wrapped in an immersive audiovisual experience.
Shikhondo: Soul Eater leans Execution (Pure Mechanics); Tetris Effect: Connected leans Execution (Pure Mechanics).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Shikhondo: Soul Eater
Weaving through dense bullet patterns is the entire game
Tetris Effect: Connected
Precision placement under acceleration is the entire skill ceiling
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Shikhondo: Soul Eater
Bosses fire scripted patterns, not adaptation
Tetris Effect: Connected
Zone-battle opponents exist but format leans on execution
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Shikhondo: Soul Eater
Some spawn and item-timing randomness
Tetris Effect: Connected
Piece bag is bounded random but quickly mappable
Shikhondo: Soul Eater leans a little harder on optimization, though the gap is small.
Shikhondo: Soul Eater
Pattern memorization and scoring routes reward study
Tetris Effect: Connected
T-spin and stacking strategy is knowable but execution overrides it
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.