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

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

Optimization · Pure Optimization
A 1998 grand strategy game pitting Empire against Rebellion across a fog-shrouded galaxy.
Fallout: New Vegas leans Optimization (Pure Optimization); Star Wars: Rebellion leans Optimization (Pure Optimization).
Fallout: New Vegas leans clearly harder on execution.
Fallout: New Vegas
Shooter inputs with VATS assist
Star Wars: Rebellion
Pausable grand strategy; no hands required
Star Wars: Rebellion leans a little harder on reads, though the gap is small.
Fallout: New Vegas
Scripted factions and enemies
Star Wars: Rebellion
Head-to-head play adds light human mind games
Star Wars: Rebellion leans clearly harder on variance.
Fallout: New Vegas
Some loot and crit RNG
Star Wars: Rebellion
Fog of war and hidden agent missions conceal the galaxy
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
Star Wars: Rebellion
Fleet logistics and mission scheduling reward systematic play
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.