When Grodd uses the orb to send out a DNA changing carrier wave, which will turn every human on earth into an Ape, he specifically says "Every Human", meaning this should NOT have worked on Superman, who is Kryptonian. Yet he turns into an ape as well. I'm not even sure it should have worked on Wonder Woman, and there are plenty of other non-human JL members who would have remained unaffected as well.
Grodd calls his weapon a "de-volution ray" that will turn humans into apes. This is a common misperception that one of Grodd's intellect shouldn't have made. Humans did not evolve from apes; humans and apes evolved from a common ancestor.