head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Optimization · Pure Optimization
Experimenting with whimsical screens until their hidden interaction logic clicks.

Optimization · Pure Optimization
Deducing scripted inventory-puzzle chains through a conspiracy story.
Samorost 2 leans Optimization (Pure Optimization); Secret Files 2: Puritas Cordis 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.
Samorost 2
Pointing and clicking has no dexterity component
Secret Files 2: Puritas Cordis
Clicking hotspots requires no dexterity
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Samorost 2
No opponent of any kind exists
Secret Files 2: Puritas Cordis
Story characters are fully scripted
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Samorost 2
Surreal puzzle logic is hidden until experimented with
Secret Files 2: Puritas Cordis
Puzzle solutions are hidden until uncovered, then static
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Samorost 2
Each screen is a small solvable interaction puzzle
Secret Files 2: Puritas Cordis
Inventory logic chains are fully solvable with deduction
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.