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
Mastering interconnected class and crafting systems to methodically solve fixed enemy compositions.
Civilization V leans Optimization (Pure Optimization); Tactics Ogre: Reborn 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
Tactics Ogre: Reborn
Turn-based; no timing inputs; menu-driven throughout
Civilization V leans a little harder on reads, though the gap is small.
Civilization V
AI follows scripted personalities, not genuine player modelling
Tactics Ogre: Reborn
Enemy AI uses fixed class-based targeting, not player modeling
Civilization V leans a little harder on variance, though the gap is small.
Civilization V
Random starts, barbarian spawns, and goody huts create hidden unknowns
Tactics Ogre: Reborn
Tarot card draws and random loot add mild variance layer
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Civilization V
Hex placement, social policies, and victory routing are fully solvable
Tactics Ogre: Reborn
Class wheel, finishers, and crafting are extensively solvable systems
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.