head to head
Disney's DuckTales: The Quest for Gold asks more than Metroid Prime 2: Echoes, and the gap is variance.

Optimization · Pure Optimization
A money-making strategy game about routing investments and treasure hunts efficiently.

Optimization · Practiced Mastery
Darker Prime sequel built on mirrored light and dark world traversal.
Disney's DuckTales: The Quest for Gold leans Optimization (Pure Optimization); Metroid Prime 2: Echoes 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.
Disney's DuckTales: The Quest for Gold
Flight minigame timing matters but is light
Metroid Prime 2: Echoes
lock-on combat, harsher but still forgiving aim
Disney's DuckTales: The Quest for Gold leans a little harder on reads, though the gap is small.
Disney's DuckTales: The Quest for Gold
No adaptive opponent, AI rivals are scripted
Metroid Prime 2: Echoes
Ing follow scripted patterns
Disney's DuckTales: The Quest for Gold leans clearly harder on variance.
Disney's DuckTales: The Quest for Gold
Treasure locations and events add randomness
Metroid Prime 2: Echoes
dark-world hazards surprise until learned
Disney's DuckTales: The Quest for Gold leans a little harder on optimization, though the gap is small.
Disney's DuckTales: The Quest for Gold
Managing cash, investments and route is the core loop
Metroid Prime 2: Echoes
dual-world routing and key hunts reward planning
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.