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 · Systems & Chaos
A horror visual novel testing careful choice-mapping to avoid hidden bad endings.

Optimization · Light / Casual
A deceptively cheerful visual novel that uses its own genre conventions as horror tools.
Corpse Party: Book of Shadows leans Optimization (Systems & Chaos); Doki Doki Literature Club! leans Optimization (Light / Casual).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Corpse Party: Book of Shadows
Visual-novel navigation needs only reading
Doki Doki Literature Club!
No inputs beyond clicking text - zero physical demand
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Corpse Party: Book of Shadows
No adaptive opponent in the cursed school
Doki Doki Literature Club!
No adaptive opponent; horror twists are scripted
Corpse Party: Book of Shadows leans a little harder on variance, though the gap is small.
Corpse Party: Book of Shadows
Wrong-end triggers are hidden until discovered
Doki Doki Literature Club!
Hidden content and flags drive the horror subversion
Corpse Party: Book of Shadows leans a little harder on optimization, though the gap is small.
Corpse Party: Book of Shadows
Mapping flags and choices to endings is the only system
Doki Doki Literature Club!
One optimal path to reach all endings once mechanics known
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.