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
An infamously cryptic NES adventure where lying villagers obscure how to break Dracula's curse.

Optimization · Systems & Chaos
Racing the day cycle to stack items faster than the seed punishes you.
Castlevania II: Simon's Quest leans Optimization (Pure Optimization); Muck leans Optimization (Systems & Chaos).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Castlevania II: Simon's Quest
Modest whip combat; day-night enemies.
Muck
Kiting bosses and dodging demands basic action skill
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Castlevania II: Simon's Quest
No adaptive opposition.
Muck
Enemies swarm on simple scripts
Muck leans a little harder on variance, though the gap is small.
Castlevania II: Simon's Quest
Deliberately false villager clues hide the real path.
Muck
Seeds, chest rolls and item drops shape every run
Castlevania II: Simon's Quest leans a little harder on optimization, though the gap is small.
Castlevania II: Simon's Quest
Once decoded, it is pure item-and-route knowledge.
Muck
Power-stacking economy and day-loop routing decide survival
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.