head to head
Dark Cloud asks more than Portal, and the gap is variance.

Optimization · Pure Optimization
PS2 RPG pairing randomized dungeon crawls with rebuilding ruined towns.

Optimization · Pure Optimization
The portal-gun puzzle game whose solutions are everything.
Dark Cloud leans Optimization (Pure Optimization); Portal leans Optimization (Pure Optimization).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Dark Cloud
real-time dungeon combat with weapon timing
Portal
Portal placement timing modest.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Dark Cloud
no adaptive opponent
Portal
No adversary modeling player.
Dark Cloud leans clearly harder on variance.
Dark Cloud
randomized dungeon floors and drops
Portal
Deterministic chambers; no randomness.
Portal leans a little harder on optimization, though the gap is small.
Dark Cloud
weapon evolution and town-building reward planning
Portal
Pure puzzle-solving optimization.
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.