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
Time-loop Zelda where mastering everyone's three-day schedule is the real puzzle.
Castlevania: Symphony of the Night leans Optimization (Pure Optimization); The Legend of Zelda: Majora's Mask 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
The Legend of Zelda: Majora's Mask
Standard Zelda combat demands
Castlevania: Symphony of the Night leans a little harder on reads, though the gap is small.
Castlevania: Symphony of the Night
Scripted bosses
The Legend of Zelda: Majora's Mask
NPCs run fixed clockwork schedules
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
The Legend of Zelda: Majora's Mask
Schedules hidden until observed, then fully mappable
The Legend of Zelda: Majora's Mask leans a little harder on optimization, though the gap is small.
Castlevania: Symphony of the Night
Build crafting and sequence breaks
The Legend of Zelda: Majora's Mask
Three-day time loop rewards ruthless scheduling and routing
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
The Legend of Zelda: Majora's Mask →