head to head
vs
Tales of Xillia 2vsUndertale
Tales of Xillia 2 leans Optimization (Pure Optimization); Undertale leans Optimization (Pure Optimization).
Tales of Xillia 2Undertale
Axis by axis
Execution4 vs 4
Even - both lean on execution about the same.
Reads0 vs 1
Undertale leans harder on reads: NPCs follow fixed dialogue trees, not adaptive
Variance2 vs 1
Tales of Xillia 2 leans harder on variance: First-pass unknowns in elemental affinities and drops
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.