Warner Bros.And again with the inconsistency; does Zack Snyder not realise this is the kind of thing fans paying any kind of attention will pick apart immediately? When Superman initially encounters Kryptonite in his fight with Batman, the mineral does exactly as it's supposed to, robbing him of his powers and turning him into a man. That levelling of the playing field was actually the best part of their fight. But then, when the spear was retrieved and Supes knew how to take down Doomsday, he was somehow able to resist the effects of his one weakness to still fly. Way to ignore the rules, there. Sure, there's a suggestion that it was a triumph of will, but if that was the case, Superman would be able to train himself to basically be immortal, and another of his selling points would be lost.