....
Batman can be wearing kryptonite. He can have ingested kryptonite. He can be wearing a kryptonite jacob's ladder for all I care.
Superman is blood lusted. He can speedblitz him at dozens of times the speed of light.
And kryptonite is having diminishing effects on Superman anyways - look how he ripped Luthor's ship (made entirely of kryptonite) to shreds.
I remember one fan comic that showed how the Batman/Superman fight SHOULD go.
Batman was all decked out in kryptonite, ready to tangle with Kal El.
Superman, on the other hand, was busy pushing the planet into the Sun. Superman wins.