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 castle-building strategy game where economic optimization and defense planning is the whole test.

Optimization · Pure Optimization
Optimising medieval production chains and settlement layouts at a gentle pace.
Stronghold leans Optimization (Pure Optimization); The Settlers: Rise of an Empire leans Optimization (Pure Optimization).
Stronghold leans a little harder on execution, though the gap is small.
Stronghold
minimal, mostly clicking and management
The Settlers: Rise of an Empire
Slow-paced building needs no dexterity
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Stronghold
AI opponents are scripted, minor prediction
The Settlers: Rise of an Empire
Multiplayer adds mild opponent anticipation, mostly economic
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Stronghold
minor resource and raid randomness
The Settlers: Rise of an Empire
Map resources are scripted-but-unknown until scouted
Stronghold leans a little harder on optimization, though the gap is small.
Stronghold
economy and castle-building near-solvable
The Settlers: Rise of an Empire
Settlement layout and production chains are the solvable core
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.