head to head
vs
Fallout SheltervsPlague Inc.
Fallout Shelter leans Optimization (Pure Optimization); Plague Inc. leans Optimization (Pure Optimization).
Fallout ShelterPlague Inc.
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.
Variance4 vs 3
Fallout Shelter leans harder on variance: Incident spawns and lunchbox loot rolls
Optimization7 vs 8
Plague Inc. leans harder on optimization: Evolution-point timing strategies are largely solved
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.