head to head
vs
Dungeons & Dragons OnlinevsFallout: New Vegas
Dungeons & Dragons Online leans Optimization (Pure Optimization); Fallout: New Vegas leans Optimization (Pure Optimization).
Dungeons & Dragons OnlineFallout: New Vegas
Axis by axis
Execution4 vs 4
Even - both lean on execution about the same.
Reads1 vs 1
Even - both lean on reads about the same.
Variance3 vs 2
Dungeons & Dragons Online leans harder on variance: Trap placements and dice rolls inject some randomness.
Optimization9 vs 8
Dungeons & Dragons Online leans harder on optimization: Multiclass build planning is famously deep and solvable.
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.