head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is execution, and it is a single point.

Optimization · Light / Casual
A branching visual novel that tests little beyond exploring choice routes.

Variance · Light / Casual
A relaxing hidden-object game finding cats in a holiday village.
Everlasting Summer leans Optimization (Light / Casual); Travellin Cats in Jingle Jam leans Variance (Light / Casual).
Travellin Cats in Jingle Jam leans a little harder on execution, though the gap is small.
Everlasting Summer
Reading and clicking choices, nothing physical
Travellin Cats in Jingle Jam
Clicking hidden cats requires no dexterity
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Everlasting Summer
No opponent - characters follow fixed branching scripts
Travellin Cats in Jingle Jam
Solo hidden-object game with no opponent
Travellin Cats in Jingle Jam leans a little harder on variance, though the gap is small.
Everlasting Summer
Route outcomes are hidden only until first playthroughs
Travellin Cats in Jingle Jam
Cat positions are hidden until spotted
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Everlasting Summer
Mapping choice branches to endings is trivially solvable
Travellin Cats in Jingle Jam
Systematic scanning speeds finding them all
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.