dont you think you are underestimating ikaris a bit? check his bio, he has energy and matter manipulation, is invulnerable and can regenerate if he is injured, can cast illusions, has telepathy and telekenesis, superspeed, teleportation, can create forcefields and has superstrength(although not nearly on supes leval) superman is so overrated all he can do is punch you or give you some heat! im sick of people saying he is high herald lvl
His heat and punches can decimate planets so I really don't care what your sick of hearing,ikaris has never done anything I can remember to say he would be able to put supes down.
Gender: Male Location: Following the Source of Light.
While I don't see anyway for Superman to kill Ikaris, he could certainly knock Iks out for a bit. Conversely, Ikaris could hang with Supes for a while, but he'd eventually be overpowered by the Man of Steel.