head to head
Fallout: New Vegas asks more than Sim Theme Park, and the gap is execution.

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

Optimization · Pure Optimization
Balancing park layout, pricing and staffing economics against predictable visitor demand.
Fallout: New Vegas leans Optimization (Pure Optimization); Sim Theme Park leans Optimization (Pure Optimization).
Fallout: New Vegas leans clearly harder on execution.
Fallout: New Vegas
Shooter inputs with VATS assist
Sim Theme Park
Menu-driven park management needs no dexterity
Fallout: New Vegas leans a little harder on reads, though the gap is small.
Fallout: New Vegas
Scripted factions and enemies
Sim Theme Park
Visitor sims follow fixed demand rules
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Fallout: New Vegas
Some loot and crit RNG
Sim Theme Park
Guest desires are mappable after a park or two
Fallout: New Vegas leans a little harder on optimization, though the gap is small.
Fallout: New Vegas
Faction routing, perks, builds heavily rewarded
Sim Theme Park
Layout, pricing and staffing math is the entire 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.