head to head
vs
BirthvsCircle of Blood
Birth leans Optimization (Systems & Chaos); Circle of Blood leans Optimization (Light / Casual).
BirthCircle of Blood
Axis by axis
Execution1 vs 1
Even - both lean on execution about the same.
Reads0 vs 0
Even - both lean on reads about the same.
Variance2 vs 1
Birth leans harder on variance: Puzzle contents are unknown until each scene is poked
Optimization4 vs 3
Birth leans harder on optimization: Observational puzzles have single discoverable solutions
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.