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 match-three game testing efficient board clearing to fund city-building.

Optimization · Pure Optimization
A tactical squad shooter where positioning and probability management outweigh raw aim.
Cradle of Rome leans Optimization (Pure Optimization); The Bureau: XCOM Declassified leans Optimization (Pure Optimization).
The Bureau: XCOM Declassified leans a little harder on execution, though the gap is small.
Cradle of Rome
Light click-speed under timers, never decisive
The Bureau: XCOM Declassified
cover shooting timing is moderate
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Cradle of Rome
Solo match-three, no opponent to model
The Bureau: XCOM Declassified
alien AI is scripted, no adaptation
Cradle of Rome leans a little harder on variance, though the gap is small.
Cradle of Rome
Board tile drops are random per move
The Bureau: XCOM Declassified
cover-based hit chances are randomized
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Cradle of Rome
Planning matches to collect resources builds the city
The Bureau: XCOM Declassified
squad tactics and builds are 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.