head to head
vs
Fallout 4vsStarfield
Fallout 4 leans Optimization (Pure Optimization); Starfield leans Optimization (Practiced Mastery).
Fallout 4Starfield
Axis by axis
Execution4 vs 5
Starfield leans harder on execution: Shooter and piloting inputs
Reads1 vs 1
Even - both lean on reads about the same.
Variance2 vs 3
Starfield leans harder on variance: Procedural planets, loot variance
Optimization7 vs 7
Even - both lean on optimization about the same.
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.