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

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

Optimization · Pure Optimization
A harsh old-school MMORPG where full-loot PvP reads and deep hunting-route optimisation define survival.
Fallout: New Vegas leans Optimization (Pure Optimization); Tibia leans Optimization (Pure Optimization).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Fallout: New Vegas
Shooter inputs with VATS assist
Tibia
Full-loot hunting and PvP require manual targeting and spell usage
Tibia leans clearly harder on reads.
Fallout: New Vegas
Scripted factions and enemies
Tibia
Open-world PvP and ganking involve reading real human opponents
Tibia leans a little harder on variance, though the gap is small.
Fallout: New Vegas
Some loot and crit RNG
Tibia
Rare loot drop rates drive extreme grind variance
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Fallout: New Vegas
Faction routing, perks, builds heavily rewarded
Tibia
Vocation builds, spawn routing, and task management are extensively solved
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.