head to head
Pokémon Legends: Arceus asks more than Portal, and the gap is variance.

Optimization · Pure Optimization
Action-leaning Pokémon spinoff about catching in real time across ancient Hisui.

Optimization · Pure Optimization
The portal-gun puzzle game whose solutions are everything.
Pokémon Legends: Arceus leans Optimization (Pure Optimization); Portal leans Optimization (Pure Optimization).
Portal leans a little harder on execution, though the gap is small.
Pokémon Legends: Arceus
Real-time dodging, sneaking, and aimed throws
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.
Pokémon Legends: Arceus
Wild and boss behavior is scripted
Portal
No adversary modeling player.
Pokémon Legends: Arceus leans clearly harder on variance.
Pokémon Legends: Arceus
Spawn tables and outbreak randomness
Portal
Deterministic chambers; no randomness.
Portal leans a little harder on optimization, though the gap is small.
Pokémon Legends: Arceus
Research tasks and agile-strong style choices 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.