head to head
Total War: Warhammer asks more than Fallout: New Vegas, and the gap is reads.

Optimization · Pure Optimization
A faction-driven RPG-shooter where build and route planning shape every ending.

Optimization · Pure Optimization
Combining campaign economy optimization with real-time battle micro and army-composition depth.
Fallout: New Vegas leans Optimization (Pure Optimization); Total War: Warhammer leans Optimization (Pure Optimization).
Total War: Warhammer leans a little harder on execution, though the gap is small.
Fallout: New Vegas
Shooter inputs with VATS assist
Total War: Warhammer
Real-time battles demand unit micro, flanking, and spell timing
Total War: Warhammer leans clearly harder on reads.
Fallout: New Vegas
Scripted factions and enemies
Total War: Warhammer
Human PvP adds reads; AI follows static attack patterns on campaign
Total War: Warhammer leans clearly harder on variance.
Fallout: New Vegas
Some loot and crit RNG
Total War: Warhammer
Random campaign events and hero skill rolls add moderate variance
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Fallout: New Vegas
Faction routing, perks, builds heavily rewarded
Total War: Warhammer
Army composition, skill tree routing, and campaign economy are deeply 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.