head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Optimization · Practiced Mastery
Solving fixed environmental puzzles by trial and error, with light timed stealth.

Optimization · Practiced Mastery
Sci-fi horror RPG blending Squaresoft turn systems with real-time dodging in 1997 Manhattan.
Black the Fall leans Optimization (Practiced Mastery); Parasite Eve leans Optimization (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Black the Fall
Some timed stealth and chase sections demand light precision
Parasite Eve
Active-time dodging between attack windows
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Black the Fall
Guards and machines run fixed detection scripts
Parasite Eve
Mitochondrial monsters follow fixed scripts
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Black the Fall
Puzzle mechanics are unknown until each trial-and-error death
Parasite Eve
Random drops and first-run boss surprises
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Black the Fall
Each room is a fixed puzzle with one solution
Parasite Eve
Weapon tuning and Parasite Energy management
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.