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
A dark psychological point-and-click adventure driven by fixed puzzles and a disturbing story.

Optimization · Systems & Chaos
A gentle hidden-object hunt through painted insect scenes with light puzzles.
Fran Bow leans Optimization (Pure Optimization); Morphopolis 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.
Fran Bow
Point-and-click inputs only
Morphopolis
Clicking painted scenes needs no dexterity
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Fran Bow
No opponents
Morphopolis
No opponent of any kind
Morphopolis leans a little harder on variance, though the gap is small.
Fran Bow
Hidden story layers until discovered
Morphopolis
Hidden objects are scripted-but-unknown until spotted
Fran Bow leans a little harder on optimization, though the gap is small.
Fran Bow
Fixed puzzle solutions; fully solvable
Morphopolis
Simple puzzle chains have single fixed answers
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.