head to head
7 Days to DievsHellgate: London
7 Days to Die leans Optimization (Pure Optimization); Hellgate: London leans Optimization (Systems & Chaos).
7 Days to DieHellgate: London
Axis by axis
Execution4 vs 4
Even - both lean on execution about the same.
Reads1 vs 0
7 Days to Die leans harder on reads: Zombie AI is largely scripted with minor pathing adaptation.
Variance4 vs 5
Hellgate: London leans harder on variance: Random loot and procedural level chunks
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.

