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

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

Optimization · Pure Optimization
A real-time tactics RPG where designing auto-combat unit formations and routing resource economy is the entire challenge.
Fallout: New Vegas leans Optimization (Pure Optimization); Unicorn Overlord leans Optimization (Pure Optimization).
Fallout: New Vegas leans clearly harder on execution.
Fallout: New Vegas
Shooter inputs with VATS assist
Unicorn Overlord
Real-time unit ordering has minimal twitch demand
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Fallout: New Vegas
Scripted factions and enemies
Unicorn Overlord
Enemy formation AI is scripted; no adaptive opponent
Unicorn Overlord leans clearly harder on variance.
Fallout: New Vegas
Some loot and crit RNG
Unicorn Overlord
Hidden unit skills and mission branch outcomes add meaningful uncertainty
Unicorn Overlord leans clearly harder on optimization.
Fallout: New Vegas
Faction routing, perks, builds heavily rewarded
Unicorn Overlord
Unit formation design, tactic routing, and value economy are literally the game
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.