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

Optimization · Practiced Mastery
Darker Prime sequel built on mirrored light and dark world traversal.

Optimization · Pure Optimization
A grand strategy game set in a fictional matriarchal world.
Metroid Prime 2: Echoes leans Optimization (Practiced Mastery); Terra Feminarum leans Optimization (Pure Optimization).
Metroid Prime 2: Echoes leans a little harder on execution, though the gap is small.
Metroid Prime 2: Echoes
lock-on combat, harsher but still forgiving aim
Terra Feminarum
light strategic-map movement control
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Metroid Prime 2: Echoes
Ing follow scripted patterns
Terra Feminarum
AI factions follow fixed strategic logic
Terra Feminarum leans a little harder on variance, though the gap is small.
Metroid Prime 2: Echoes
dark-world hazards surprise until learned
Terra Feminarum
battle outcomes and events randomized
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Metroid Prime 2: Echoes
dual-world routing and key hunts reward planning
Terra Feminarum
empire management and strategy dominate play
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.