head to head
vs
Fallout: New VegasvsXenoblade Chronicles X: Definitive Edition
Fallout: New Vegas leans Optimization (Pure Optimization); Xenoblade Chronicles X: Definitive Edition leans Optimization (Pure Optimization).
Axis by axis
Xenoblade Chronicles X: Definitive Edition leans harder on execution: Real-time art timing and Overdrive chain execution add meaningful input demands
Even - both lean on reads about the same.
Xenoblade Chronicles X: Definitive Edition leans harder on variance: Augment material drops and treasure hunting carry moderate RNG
Xenoblade Chronicles X: Definitive Edition leans harder on optimization: Skell frame builds, art resonance, and Overdrive chain routing form an exceptionally deep solve
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.