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

Optimization · Practiced Mastery
A lovingly pixelled aerial adventure where Otus carries gunner friends through floating islands.

Optimization · Practiced Mastery
An adventure game where solving dungeon puzzles and light combat define the experience.
Owlboy leans Optimization (Practiced Mastery); The Legend of Zelda: Twilight Princess HD leans Optimization (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Owlboy
Flying and gunner-swapping in light combat
The Legend of Zelda: Twilight Princess HD
combat and platforming need moderate precision
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Owlboy
Scripted pirates and bosses
The Legend of Zelda: Twilight Princess HD
scripted enemies, no adaptation
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Owlboy
Hand-crafted, deterministic world
The Legend of Zelda: Twilight Princess HD
minimal randomness in encounters
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Owlboy
Boss patterns and secrets are learnable
The Legend of Zelda: Twilight Princess HD
puzzle solutions and dungeon routes solvable
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.