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
The original loot-driven co-op shooter set on the bandit world of Pandora.

Optimization · Pure Optimization
An infamously cryptic NES adventure where lying villagers obscure how to break Dracula's curse.
Borderlands leans Optimization (Practiced Mastery); Castlevania II: Simon's Quest leans Optimization (Pure Optimization).
Borderlands leans a little harder on execution, though the gap is small.
Borderlands
Standard FPS aim; numbers matter more than precision
Castlevania II: Simon's Quest
Modest whip combat; day-night enemies.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Borderlands
Bandits and skags are scripted
Castlevania II: Simon's Quest
No adaptive opposition.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Borderlands
Procedural loot drops gate your power
Castlevania II: Simon's Quest
Deliberately false villager clues hide the real path.
Castlevania II: Simon's Quest leans a little harder on optimization, though the gap is small.
Borderlands
Builds, gear math, and farming routes dominate
Castlevania II: Simon's Quest
Once decoded, it is pure item-and-route knowledge.
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.