head to head
Fallout: New Vegas asks more than Darkest Hour: A Hearts of Iron Game, and the gap is execution.

Optimization · Pure Optimization
A WWII grand strategy testing production planning and front-line logistics at scale.

Optimization · Pure Optimization
A faction-driven RPG-shooter where build and route planning shape every ending.
Darkest Hour: A Hearts of Iron Game leans Optimization (Pure Optimization); Fallout: New Vegas leans Optimization (Pure Optimization).
Fallout: New Vegas leans clearly harder on execution.
Darkest Hour: A Hearts of Iron Game
Pausable map clicking, zero twitch demand
Fallout: New Vegas
Shooter inputs with VATS assist
Darkest Hour: A Hearts of Iron Game leans a little harder on reads, though the gap is small.
Darkest Hour: A Hearts of Iron Game
Multiplayer diplomacy adds rare human prediction
Fallout: New Vegas
Scripted factions and enemies
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Darkest Hour: A Hearts of Iron Game
Historical events fire semi-randomly but are well documented
Fallout: New Vegas
Some loot and crit RNG
Darkest Hour: A Hearts of Iron Game leans a little harder on optimization, though the gap is small.
Darkest Hour: A Hearts of Iron Game
Production, supply and front planning across decades is everything
Fallout: New Vegas
Faction routing, perks, builds heavily rewarded
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.