Eh people make too much of a big deal about that, superman hasn't been in a massively successful film in decade and I don't think movie audiences care too much about the character these days, Snyder's take or not.
It's mainly just batman doing the heavy lifting there.
You kiddin'? It's the first time we had ever seen Batman, Superman and Wonder Woman on film for the first time. Those 3 are pretty much the most popular Superheroes in the West.