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 · Pure Optimization
A simple economy-timing puzzle of when to spawn units and evolve ages.

Optimization · Pure Optimization
Sequel that adds a mother-daughter pair to its impossible-architecture puzzles.
Age of War leans Optimization (Pure Optimization); Monument Valley 2 leans Optimization (Pure Optimization).
Age of War leans a little harder on execution, though the gap is small.
Age of War
Clicking spawn buttons with decent timing suffices
Monument Valley 2
Gentle touch controls, no reflexes
Age of War leans a little harder on reads, though the gap is small.
Age of War
The AI follows predictable spawn logic
Monument Valley 2
Nothing opposes you
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Age of War
Matches play out almost identically given same choices
Monument Valley 2
Deterministic authored levels
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Age of War
Unit economy and evolution timing decide the stalemate
Monument Valley 2
Geometry manipulation puzzles with intended 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.