head to head
vs
Project ZomboidvsSubterrain
Project Zomboid leans Optimization (Pure Optimization); Subterrain leans Optimization (Pure Optimization).
Project ZomboidSubterrain
Axis by axis
Execution3 vs 4
Subterrain leans harder on execution: Twin-stick shooting matters but isn't the lead
Reads0 vs 1
Subterrain leans harder on reads: Mutant enemies are scripted, not modeling you
Variance5 vs 5
Even - both lean on variance about the same.
Optimization8 vs 8
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.