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 narrative walk that tests patience and curiosity more than any skill.

Optimization · Light / Casual
Atompunk walking sim adapting Lem's novel about a hostile robotic planet.
The First Tree leans Optimization (Light / Casual); The Invincible 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.
The First Tree
Gentle jumps with no fail pressure
The Invincible
Walking and dialogue choices only
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
The First Tree
No opponents of any kind
The Invincible
No opposition of any kind
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
The First Tree
Artifact locations unknown only until found
The Invincible
Authored story with branching endings
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
The First Tree
Light exploration with nothing meaningful to solve
The Invincible
Light exploration; choices steer narrative
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.