In this case, for EDM, the AC delivers sub bass that very few headphones can touch. Not the Sennheiser HD250, not the pre fazor LCD 2,and not Atrium open.I can't fathom why would anyone want more bass than AO. With a good tube amp (Aegis) it has all bass I could possibly want.
I feel like the AO excels with rock and blues, traditional metal, folk, Americana, etc ...
The AC also can do these genres too, but when you feed the AC some sub bass laden music that's when the AC really gets to show off what it's capable of.