head to head
vs
Maiden & SpellvsTetris 99
Maiden & Spell leans Execution (Pure Mechanics); Tetris 99 leans Execution (Pure Mechanics).
Maiden & SpellTetris 99
Axis by axis
Execution9 vs 9
Even - both lean on execution about the same.
Reads4 vs 4
Even - both lean on reads about the same.
Variance2 vs 4
Tetris 99 leans harder on variance: Incoming garbage timing and piece sequence add chaos
Optimization4 vs 5
Tetris 99 leans harder on optimization: Stacking theory and downstack efficiency are studied skills
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.