head to head
80 Daysvs999: Nine Hours, Nine Persons, Nine Doors
80 Days leans Optimization (Systems & Chaos); 999: Nine Hours, Nine Persons, Nine Doors leans Optimization (Systems & Chaos).
80 Days999: Nine Hours, Nine Persons, Nine Doors
Axis by axis
Execution0 vs 0
Even - both lean on execution about the same.
Reads0 vs 0
Even - both lean on reads about the same.
Variance5 vs 4
80 Days leans harder on variance: Unknown routes, events, and market prices on first runs
Optimization7 vs 6
80 Days leans harder on optimization: Routing, packing, and trading converge to optimal circumnavigations
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.

