head to head
vs
Black the FallvsMetroid Prime 2: Echoes
Black the Fall leans Optimization (Practiced Mastery); Metroid Prime 2: Echoes leans Optimization (Practiced Mastery).
Black the FallMetroid Prime 2: Echoes
Axis by axis
Execution4 vs 4
Even - both lean on execution about the same.
Reads0 vs 0
Even - both lean on reads about the same.
Variance3 vs 2
Black the Fall leans harder on variance: Puzzle mechanics are unknown until each trial-and-error death
Optimization6 vs 6
Even - both lean on optimization about the same.
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.