head to head
Army of TwovsZombie Army Trilogy
Army of Two leans Execution (Practiced Mastery); Zombie Army Trilogy leans Execution (Practiced Mastery).
Army of TwoZombie Army Trilogy
Axis by axis
Execution5 vs 6
Zombie Army Trilogy leans harder on execution: Long-range sniping and horde kiting demand steady aim
Reads1 vs 0
Army of Two leans harder on reads: Aggro system is mappable, not adaptive
Variance2 vs 2
Even - both lean on variance about the same.
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.

