head to head
7 Days to DievsPhantasy Star Online
7 Days to Die leans Optimization (Pure Optimization); Phantasy Star Online leans Optimization (Systems & Chaos).
7 Days to DiePhantasy Star Online
Axis by axis
Execution4 vs 4
Even - both lean on execution about the same.
Reads1 vs 1
Even - both lean on reads about the same.
Variance4 vs 5
Phantasy Star Online leans harder on variance: Rare drop hunting drives the loop
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.

