head to head
Neither is simply harder - they are hard in different places. Fallout: New Vegas demands more execution; The Battle of Polytopia demands more reads.

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

Optimization · Pure Optimization
A minimalist mobile-born 4X that compresses empire building into quick competitive matches.
Fallout: New Vegas leans Optimization (Pure Optimization); The Battle of Polytopia leans Optimization (Pure Optimization).
Fallout: New Vegas leans clearly harder on execution.
Fallout: New Vegas
Shooter inputs with VATS assist
The Battle of Polytopia
Tap-based turns; no dexterity
The Battle of Polytopia leans clearly harder on reads.
Fallout: New Vegas
Scripted factions and enemies
The Battle of Polytopia
Ranked multiplayer rewards predicting human expansion and timing
The Battle of Polytopia leans clearly harder on variance.
Fallout: New Vegas
Some loot and crit RNG
The Battle of Polytopia
Unexplored small maps hide ruins and rivals
The Battle of Polytopia leans a little harder on optimization, though the gap is small.
Fallout: New Vegas
Faction routing, perks, builds heavily rewarded
The Battle of Polytopia
Tight economy math makes perfect openings near-solvable
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.