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

Optimization · Systems & Chaos
A hidden-object game testing systematic visual search for hidden cats.

Optimization · Light / Casual
A narrative horror-investigation game where uncovering the mystery outweighs any mechanical challenge.
100 Istanbul Cats leans Optimization (Systems & Chaos); Call of Cthulhu leans Optimization (Light / Casual).
Call of Cthulhu leans a little harder on execution, though the gap is small.
100 Istanbul Cats
Scanning and clicking demands no twitch
Call of Cthulhu
light stealth timing, mostly minor
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
100 Istanbul Cats
Solo hidden-object game, no opponent
Call of Cthulhu
no opponents, narrative investigation
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
100 Istanbul Cats
Cat placement hidden until found
Call of Cthulhu
skill checks add randomness
100 Istanbul Cats leans a little harder on optimization, though the gap is small.
100 Istanbul Cats
Systematic scanning of the scene finds every cat
Call of Cthulhu
stat allocation lightly solvable
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.