head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is variance, and it is a single point.

Optimization · Pure Optimization
A spiritual successor to classic Castlevania metroidvanias.

Optimization · Pure Optimization
The genre-defining metroidvania with deep RPG systems.
Bloodstained: Ritual of the Night leans Optimization (Pure Optimization); Castlevania: Symphony of the Night leans Optimization (Pure Optimization).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Bloodstained: Ritual of the Night
Action combat with modest demands
Castlevania: Symphony of the Night
Forgiving action combat
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Bloodstained: Ritual of the Night
Scripted bosses
Castlevania: Symphony of the Night
Scripted bosses
Bloodstained: Ritual of the Night leans a little harder on variance, though the gap is small.
Bloodstained: Ritual of the Night
Shard and crafting drops
Castlevania: Symphony of the Night
Item drops and rare gear
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Bloodstained: Ritual of the Night
Shard builds and crafting routes
Castlevania: Symphony of the Night
Build crafting and sequence breaks
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.