head to head
vs
Contra ReBirthvsThumper
Contra ReBirth leans Execution (Pure Mechanics); Thumper leans Execution (Pure Mechanics).
Contra ReBirthThumper
Axis by axis
Execution9 vs 9
Even - both lean on execution about the same.
Reads0 vs 0
Even - both lean on reads about the same.
Variance2 vs 1
Contra ReBirth leans harder on variance: Some randomness in enemy fire
Optimization4 vs 4
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.