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 · Light / Casual
A classic point-and-click adventure where solving inventory puzzles is the entire challenge.

Optimization · Systems & Chaos
A children's hidden-object game about spotting items from rhyming riddles.
Grim Fandango Remastered leans Optimization (Light / Casual); I Spy Fantasy 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.
Grim Fandango Remastered
no physical skill ceiling, point-and-click
I Spy Fantasy
Clicking found objects, no dexterity
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Grim Fandango Remastered
no opponents, puzzle-driven
I Spy Fantasy
No opponent to model
I Spy Fantasy leans a little harder on variance, though the gap is small.
Grim Fandango Remastered
no meaningful randomness
I Spy Fantasy
Object placement varies but is fixed per scene
I Spy Fantasy leans a little harder on optimization, though the gap is small.
Grim Fandango Remastered
item and dialogue puzzle logic solvable
I Spy Fantasy
Systematic scanning to find riddle objects faster
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.