head to head
World of Warcraft 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
An MMORPG dominated by theorycraft, gear math, and rotation execution.
Fallout: New Vegas leans Optimization (Pure Optimization); World of Warcraft leans Optimization (Pure Optimization).
World of Warcraft leans a little harder on execution, though the gap is small.
Fallout: New Vegas
Shooter inputs with VATS assist
World of Warcraft
Rotation APM and mechanics matter in raids
World of Warcraft leans clearly harder on reads.
Fallout: New Vegas
Scripted factions and enemies
World of Warcraft
PvP arenas have light read element
World of Warcraft leans a little harder on variance, though the gap is small.
Fallout: New Vegas
Some loot and crit RNG
World of Warcraft
Loot tables and crit RNG present
World of Warcraft leans a little harder on optimization, though the gap is small.
Fallout: New Vegas
Faction routing, perks, builds heavily rewarded
World of Warcraft
Gear, talents, and rotation are mathematically 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.