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
Combat-focused Infinity Engine RPG built on D&D party optimization.

Optimization · Pure Optimization
A 1994 Sid Meier strategy game about building colonial economies and winning independence.
Icewind Dale leans Optimization (Pure Optimization); Sid Meier's Colonization leans Optimization (Pure Optimization).
Icewind Dale leans a little harder on execution, though the gap is small.
Icewind Dale
Pausable real-time needs little dexterity
Sid Meier's Colonization
Turn-based; hands irrelevant
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Icewind Dale
Enemies follow fixed AI scripts
Sid Meier's Colonization
Royal and rival AI behave on fixed schedules
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Icewind Dale
D&D dice rolls and random loot tables
Sid Meier's Colonization
Random New World maps and native placement vary starts
Sid Meier's Colonization leans a little harder on optimization, though the gap is small.
Icewind Dale
Party builds, spell prep, and encounter knowledge
Sid Meier's Colonization
Production chains and liberty-bell timing are a solvable economy
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.