head to head
vs
Batman: Arkham CityvsSpider-Man 2
Batman: Arkham City leans Execution (Practiced Mastery); Spider-Man 2 leans Execution (Practiced Mastery).
Batman: Arkham CitySpider-Man 2
Axis by axis
Execution5 vs 6
Spider-Man 2 leans harder on execution: web-swinging and combat timing precision
Reads1 vs 1
Even - both lean on reads about the same.
Variance1 vs 1
Even - both lean on variance about the same.
Optimization5 vs 5
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.