head to head
Neither is simply harder - they are hard in different places. Fallout: New Vegas demands more execution; Telling Lies demands more variance.

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

Optimization · Pure Optimization
A fragmented surveillance drama where keyword searches and clip assembly reconstruct a hidden story.
Fallout: New Vegas leans Optimization (Pure Optimization); Telling Lies leans Optimization (Pure Optimization).
Fallout: New Vegas leans clearly harder on execution.
Fallout: New Vegas
Shooter inputs with VATS assist
Telling Lies
Search-and-playback interface demands no motor skill
Fallout: New Vegas leans a little harder on reads, though the gap is small.
Fallout: New Vegas
Scripted factions and enemies
Telling Lies
Pre-recorded footage has no adaptive component
Telling Lies leans clearly harder on variance.
Fallout: New Vegas
Some loot and crit RNG
Telling Lies
Non-linear fragmented footage obscures the timeline and relationships
Fallout: New Vegas leans a little harder on optimization, though the gap is small.
Fallout: New Vegas
Faction routing, perks, builds heavily rewarded
Telling Lies
Methodical keyword search and clip ordering reconstructs the hidden narrative
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.