Building comparison
head to head
Castlevania III: Dracula's CursevsNinja Gaiden Sigma 2
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.
Castlevania III: Dracula's Curse
Execution · Pure Mechanics
The hardest NES Castlevania, with branching routes and switchable partner characters.
Ninja Gaiden Sigma 2
Execution · Pure Mechanics
Faster, gorier sequel built around dismembering aggressive enemies before they swarm you.
Castlevania III: Dracula's Curse leans Execution (Pure Mechanics); Ninja Gaiden Sigma 2 leans Execution (Pure Mechanics).
Castlevania III: Dracula's CurseNinja Gaiden Sigma 2
Axis by axis
Execution9 vs 9
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Castlevania III: Dracula's Curse
Brutal platforming and tight whip timing throughout
Ninja Gaiden Sigma 2
Delimb-and-finish combat under constant projectile pressure stays brutal
Reads0 vs 0
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Castlevania III: Dracula's Curse
Scripted enemies and bosses only
Ninja Gaiden Sigma 2
Aggressive enemy AI remains pattern-driven
Variance1 vs 1
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Castlevania III: Dracula's Curse
Minor enemy spawn wobble
Ninja Gaiden Sigma 2
Fixed missions; little randomness across runs
Optimization6 vs 6
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Castlevania III: Dracula's Curse
Partner choice, route branching, pattern memory
Ninja Gaiden Sigma 2
Weapon matchups and essence routing reward system study
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.