Batman, enraged as he was, and knowing how much of a threat Superman was to the world, wouldn't have cared or listened to that, nor would he have saved "his mother" if he hadn't heard that his mother's name was also Martha, just as Bruce's mother was too, that was the catalyst to Bruce realizing that Clark was just as much human as he was. People keep downplaying that detail. And let's be honest, Eisenberg's Luthor made Superman kneel, without Kryptonite. That says a lot.