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

Optimization · Pure Optimization
The genre-defining metroidvania with deep RPG systems.

Optimization · Pure Optimization
A time-limited JRPG where Lightning races a doomsday clock with customizable battle outfits.
Castlevania: Symphony of the Night leans Optimization (Pure Optimization); Lightning Returns: Final Fantasy XIII 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.
Castlevania: Symphony of the Night
Forgiving action combat
Lightning Returns: Final Fantasy XIII
Real-time guards and stagger timing matter
Castlevania: Symphony of the Night leans a little harder on reads, though the gap is small.
Castlevania: Symphony of the Night
Scripted bosses
Lightning Returns: Final Fantasy XIII
Enemies are scripted
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Castlevania: Symphony of the Night
Item drops and rare gear
Lightning Returns: Final Fantasy XIII
Some drop and quest randomness
Lightning Returns: Final Fantasy XIII leans a little harder on optimization, though the gap is small.
Castlevania: Symphony of the Night
Build crafting and sequence breaks
Lightning Returns: Final Fantasy XIII
World-clock scheduling and schemata builds dominate
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.
full breakdown
Castlevania: Symphony of the Night →
full breakdown
Lightning Returns: Final Fantasy XIII →