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 · Pure Optimization
A deep 3.5E optimization puzzle where prestige class chaining and feat synergies determine party effectiveness.

Optimization · Pure Optimization
An auto-attacker where picking the right weapon evolutions wins by itself.
Neverwinter Nights 2 leans Optimization (Pure Optimization); Vampire Survivors leans Optimization (Pure Optimization).
Neverwinter Nights 2 leans a little harder on execution, though the gap is small.
Neverwinter Nights 2
Tactical pause negates twitch; positioning is deliberate not reactive
Vampire Survivors
Movement is trivial; no aim or precision required.
Neverwinter Nights 2 leans a little harder on reads, though the gap is small.
Neverwinter Nights 2
Companion AI and enemy scripting are fixed, non-adaptive routines
Vampire Survivors
Enemies follow fixed spawn scripts; no adaptive opponent.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Neverwinter Nights 2
Hidden enemy stat blocks and variable dungeon RNG create unknowns
Vampire Survivors
Level-up offerings and pickup drops are randomized.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Neverwinter Nights 2
3.5E feat synergies and prestige class planning define optimal builds
Vampire Survivors
Evolution paths and weapon combinations fully solve the run.
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.