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

Optimization · Pure Optimization
Uncovering a fixed murder mystery through inventory puzzles and deduction.

Optimization · Pure Optimization
A meta puzzle comedy testing lateral thinking against deliberately misleading interface tricks.
Still Life leans Optimization (Pure Optimization); There Is No Game leans Optimization (Pure Optimization).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Still Life
Pointing and clicking carries no physical demand
There Is No Game
Clicking is trivial by design
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Still Life
The killer is a fixed narrative, not an adapting opponent
There Is No Game
The narrator is scripted comedy, not an adapting mind
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Still Life
The mystery's facts are hidden until uncovered
There Is No Game
Surprise fourth-wall tricks are hidden until discovered once
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Still Life
Inventory puzzles and deduction steps have fixed solutions
There Is No Game
Lateral-thinking puzzles have fixed clever 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.