Building comparison
head to head
Digimon World 2vsPortal
Neither is simply harder - they are hard in different places. Digimon World 2 demands more variance; Portal demands more execution.
Digimon World 2
Optimization · Pure Optimization
Dungeon-crawling PS1 sequel built around DNA digivolution and grinding through randomized domains.
Portal
Optimization · Pure Optimization
The portal-gun puzzle game whose solutions are everything.
Digimon World 2 leans Optimization (Pure Optimization); Portal leans Optimization (Pure Optimization).
Digimon World 2Portal
Axis by axis
Execution0 vs 4
Portal leans clearly harder on execution.
Digimon World 2
Turn-based dungeon crawling; no dexterity
Portal
Portal placement timing modest.
Reads0 vs 0
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Digimon World 2
Fixed AI encounters only
Portal
No adversary modeling player.
Variance4 vs 0
Digimon World 2 leans clearly harder on variance.
Digimon World 2
Random dungeon layouts and recruitment rolls
Portal
Deterministic chambers; no randomness.
Optimization8 vs 8
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Digimon World 2
DNA digivolving and party math are the whole game
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.