head to head
vs
Black BookvsFallout Shelter
Black Book leans Optimization (Systems & Chaos); Fallout Shelter leans Optimization (Pure Optimization).
Black BookFallout Shelter
Axis by axis
Execution1 vs 0
Black Book leans harder on execution: Turn-based card combat, no input precision.
Reads0 vs 0
Even - both lean on reads about the same.
Variance5 vs 4
Black Book leans harder on variance: Card draws and event branches swing runs.
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.