head to head
Neither is simply harder - they are hard in different places. Draft Day Sports Pro Basketball 4 demands more variance; Fallout: New Vegas demands more execution.

Optimization · Pure Optimization
A basketball management simulation focused on team building and drafting.

Optimization · Pure Optimization
A faction-driven RPG-shooter where build and route planning shape every ending.
Draft Day Sports Pro Basketball 4 leans Optimization (Pure Optimization); Fallout: New Vegas leans Optimization (Pure Optimization).
Fallout: New Vegas leans clearly harder on execution.
Draft Day Sports Pro Basketball 4
no direct control, management-only simulation
Fallout: New Vegas
Shooter inputs with VATS assist
Draft Day Sports Pro Basketball 4 leans a little harder on reads, though the gap is small.
Draft Day Sports Pro Basketball 4
AI opponent GMs, not truly adaptive
Fallout: New Vegas
Scripted factions and enemies
Draft Day Sports Pro Basketball 4 leans clearly harder on variance.
Draft Day Sports Pro Basketball 4
draft luck, injuries, game simulation randomness
Fallout: New Vegas
Some loot and crit RNG
Draft Day Sports Pro Basketball 4 leans a little harder on optimization, though the gap is small.
Draft Day Sports Pro Basketball 4
roster building, drafting, cap strategy
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.