head to head
Fallout: New Vegas asks more than Planescape: Torment, and the gap is execution.

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

Optimization · Pure Optimization
A narrative RPG that tests knowledge of its philosophical systems and dialogue trees more than any combat skill.
Fallout: New Vegas leans Optimization (Pure Optimization); Planescape: Torment leans Optimization (Pure Optimization).
Fallout: New Vegas leans clearly harder on execution.
Fallout: New Vegas
Shooter inputs with VATS assist
Planescape: Torment
Combat is deemphasised; the game is built to be avoided or trivial
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Fallout: New Vegas
Scripted factions and enemies
Planescape: Torment
NPCs are scripted personalities; no adaptive opponent exists
Planescape: Torment leans a little harder on variance, though the gap is small.
Fallout: New Vegas
Some loot and crit RNG
Planescape: Torment
Some dialogue outcomes and item discoveries are hidden until explored
Fallout: New Vegas leans a little harder on optimization, though the gap is small.
Fallout: New Vegas
Faction routing, perks, builds heavily rewarded
Planescape: Torment
Stat allocation, dialogue routing and companion management reward system mastery
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.