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 relaxed hidden-object hunt for cats across hand-drawn scenes.

Optimization · Light / Casual
A meditative picture-book stroll with pressure-free terrain puzzles.
100 Ninja Cats leans Optimization (Light / Casual); Old Man's Journey 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.
100 Ninja Cats
Clicking to find hidden cats, no twitch demand
Old Man's Journey
Dragging hills around requires no dexterity
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
100 Ninja Cats
Solo with no opponent to predict
Old Man's Journey
No opponent exists
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
100 Ninja Cats
Cat locations fixed, just hidden until spotted
Old Man's Journey
Nothing meaningfully hidden or random
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
100 Ninja Cats
Systematic searching of scenes is the only system
Old Man's Journey
Gentle terrain puzzles with obvious 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.