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
Investigation and deduction-tree logic with token action interludes.

Optimization · Pure Optimization
A first-person farming game about wrangling adorable slimes for plorts.
Sherlock Holmes: The Devil's Daughter leans Optimization (Pure Optimization); Slime Rancher 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.
Sherlock Holmes: The Devil's Daughter
Occasional action minigames, mostly trivial
Slime Rancher
Vacuum aiming is gentle.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Sherlock Holmes: The Devil's Daughter
Suspects are written characters, not adapting minds
Slime Rancher
Slimes follow scripted behaviors.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Sherlock Holmes: The Devil's Daughter
Case clues are hidden until investigated
Slime Rancher
Plort prices and slime spawns vary.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Sherlock Holmes: The Devil's Daughter
Deduction-tree reasoning from gathered evidence is the game
Slime Rancher
Ranch layout and economy reward planning.
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.