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

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

Optimization · Light / Casual
Tests very little mechanically - a dark authored story carried by light RPG battles.
Grim Fandango Remastered leans Optimization (Light / Casual); Wadanohara and the Great Blue Sea leans Optimization (Light / Casual).
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
Wadanohara and the Great Blue Sea
Top-down walking and menu battles need 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
Wadanohara and the Great Blue Sea
Story characters never adapt to the player
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Grim Fandango Remastered
no meaningful randomness
Wadanohara and the Great Blue Sea
Plot twists are authored, not random
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Grim Fandango Remastered
item and dialogue puzzle logic solvable
Wadanohara and the Great Blue Sea
Simple RPG battles and light puzzles barely resist
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.