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 hidden-object game testing methodical visual search for hidden robo-cats.

Optimization · Pure Optimization
Claymation point-and-click adventure sculpted entirely from plasticine whimsy.
100 Robo Cats leans Optimization (Systems & Chaos); The Neverhood 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.
100 Robo Cats
Clicking found cats needs no dexterity
The Neverhood
Point-and-click; no dexterity
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
100 Robo Cats
Solo hidden-object game, no opponent
The Neverhood
No opposition exists
100 Robo Cats leans a little harder on variance, though the gap is small.
100 Robo Cats
Cat locations hidden until discovered
The Neverhood
Puzzles hidden until discovered, then fixed
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
100 Robo Cats
Methodical scene scanning finds all the cats
The Neverhood
Adventure puzzle chains with single solutions
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.