head to head
vs
Puyo Puyo Tetris 2vsTetris 99
Puyo Puyo Tetris 2 leans Execution (Practiced Mastery); Tetris 99 leans Execution (Pure Mechanics).
Puyo Puyo Tetris 2Tetris 99
Axis by axis
Execution8 vs 9
Tetris 99 leans harder on execution: High-speed stacking and finesse define survival
Reads4 vs 4
Even - both lean on reads about the same.
Variance4 vs 4
Even - both lean on variance about the same.
Optimization6 vs 5
Puyo Puyo Tetris 2 leans harder on optimization: chain-building and stacking theory mastery
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.