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 · Practiced Mastery
Gentle adventure about painting living murals to revive a polluted town.

Optimization · Pure Optimization
A heartfelt WWI puzzle adventure following four lives through the trenches.
Concrete Genie leans Optimization (Practiced Mastery); Valiant Hearts: The Great War leans Optimization (Pure Optimization).
Concrete Genie leans a little harder on execution, though the gap is small.
Concrete Genie
Light painting motions and gentle platforming
Valiant Hearts: The Great War
Gentle timing in a few chase sequences
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Concrete Genie
No adversary; bullies are scripted scenes
Valiant Hearts: The Great War
No opponent
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Concrete Genie
Little hidden beyond exploration
Valiant Hearts: The Great War
Fixed puzzles, fully visible
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Concrete Genie
Finding paintable walls and puzzle solutions
Valiant Hearts: The Great War
Simple inventory and environmental puzzles with set 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.