head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is reads, and it is a single point.

Optimization · Pure Optimization
Optimizing city placement, social policies, and victory routing under randomized map unknowns.

Optimization · Pure Optimization
A 40K turn-based RPG where conviction stacking and ability chaining produce dominant optimization floors.
Civilization V leans Optimization (Pure Optimization); Warhammer 40,000: Rogue Trader leans Optimization (Pure Optimization).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Civilization V
UI actions need no precision; speed is not a factor
Warhammer 40,000: Rogue Trader
Turn-based grid combat removes all real-time pressure
Civilization V leans a little harder on reads, though the gap is small.
Civilization V
AI follows scripted personalities, not genuine player modelling
Warhammer 40,000: Rogue Trader
Xenos and heretics run fixed scripted AI routines without modelling players
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Civilization V
Random starts, barbarian spawns, and goody huts create hidden unknowns
Warhammer 40,000: Rogue Trader
Hidden voidship encounter outcomes and momentum RNG create unknowns
Warhammer 40,000: Rogue Trader leans a little harder on optimization, though the gap is small.
Civilization V
Hex placement, social policies, and victory routing are fully solvable
Warhammer 40,000: Rogue Trader
Arch-Militant conviction stacking and navigator ability chains reach broken optimization ceilings
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.