head to head
ARK: Survival Ascended asks more than Fallout: New Vegas, and the gap is reads.

Optimization · Pure Optimization
A dinosaur survival sim where logistics and tame quality beat reflexes.

Optimization · Pure Optimization
A faction-driven RPG-shooter where build and route planning shape every ending.
ARK: Survival Ascended leans Optimization (Pure Optimization); Fallout: New Vegas leans Optimization (Pure Optimization).
Fallout: New Vegas leans a little harder on execution, though the gap is small.
ARK: Survival Ascended
Combat is clunky; precision rarely decisive.
Fallout: New Vegas
Shooter inputs with VATS assist
ARK: Survival Ascended leans clearly harder on reads.
ARK: Survival Ascended
PvP servers introduce some adaptive human opposition.
Fallout: New Vegas
Scripted factions and enemies
ARK: Survival Ascended leans a little harder on variance, though the gap is small.
ARK: Survival Ascended
Taming and breeding stats randomized.
Fallout: New Vegas
Some loot and crit RNG
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
ARK: Survival Ascended
Tame stacking, breeding lines, and base logistics dominate.
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.