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

Optimization · Systems & Chaos
Tests attentive reading and interrogation-line selection in a noir mystery.

Optimization · Light / Casual
A branching visual novel that tests little beyond exploring choice routes.
Chicken Police leans Optimization (Systems & Chaos); Everlasting Summer 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.
Chicken Police
Point-and-click interrogation needs no dexterity
Everlasting Summer
Reading and clicking choices, nothing physical
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Chicken Police
Suspects are authored characters with fixed responses
Everlasting Summer
No opponent - characters follow fixed branching scripts
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Chicken Police
Case details are hidden until interrogated out
Everlasting Summer
Route outcomes are hidden only until first playthroughs
Chicken Police leans a little harder on optimization, though the gap is small.
Chicken Police
Picking correct interrogation lines is a solvable puzzle
Everlasting Summer
Mapping choice branches to endings is trivially 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.