head to head
Fallout: New Vegas asks more than Endless Fables 2: Frozen Path, and the gap is execution.

Optimization · Pure Optimization
A hidden-object adventure about solving fixed puzzles to follow a Norse mystery.

Optimization · Pure Optimization
A faction-driven RPG-shooter where build and route planning shape every ending.
Endless Fables 2: Frozen Path leans Optimization (Pure Optimization); Fallout: New Vegas leans Optimization (Pure Optimization).
Fallout: New Vegas leans clearly harder on execution.
Endless Fables 2: Frozen Path
Point-and-click and hidden-object hunting, no dexterity
Fallout: New Vegas
Shooter inputs with VATS assist
Fallout: New Vegas leans a little harder on reads, though the gap is small.
Endless Fables 2: Frozen Path
No adaptive opponent in solo adventure
Fallout: New Vegas
Scripted factions and enemies
Fallout: New Vegas leans a little harder on variance, though the gap is small.
Endless Fables 2: Frozen Path
Puzzles and scenes are fixed
Fallout: New Vegas
Some loot and crit RNG
Fallout: New Vegas leans a little harder on optimization, though the gap is small.
Endless Fables 2: Frozen Path
Solving inventory puzzles and finding objects is the loop
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.