head to head
Neither is simply harder - they are hard in different places. Fallout: New Vegas demands more execution; FIFA Manager 14 demands more variance.

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

Optimization · Pure Optimization
A football management sim testing squad-building, finance and tactical optimization.
Fallout: New Vegas leans Optimization (Pure Optimization); FIFA Manager 14 leans Optimization (Pure Optimization).
Fallout: New Vegas leans clearly harder on execution.
Fallout: New Vegas
Shooter inputs with VATS assist
FIFA Manager 14
Menu-driven management, no physical input skill
FIFA Manager 14 leans a little harder on reads, though the gap is small.
Fallout: New Vegas
Scripted factions and enemies
FIFA Manager 14
AI clubs follow scripted logic, no real adaptation
FIFA Manager 14 leans clearly harder on variance.
Fallout: New Vegas
Some loot and crit RNG
FIFA Manager 14
Match results and injuries carry simulation randomness
FIFA Manager 14 leans a little harder on optimization, though the gap is small.
Fallout: New Vegas
Faction routing, perks, builds heavily rewarded
FIFA Manager 14
Squad, finance and tactics planning dominates entirely
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.