What if by some strange turn of events, Superman and Batman had to take the showdown in a room emitting red sunlight? I believe that Lex Luthor didn't want to kill him with kryptonite bullets for it would be too easy. Also if I can remember during Smallville TV show and the Doomsday graphic novel he wants Superman alive to make clones of him and in turn have world domination in his grasp.
I visited superdickery.com and had a glimpse of the Showdown in Gotham City. Im curious as to wether you've read it or not as its struck my fancy. Surely Batman would get to use bullets made from kryptonite?
Haha yeah, NEPA is simply awful. I've lived here my entire life, and now I deal with people from this area on the phone constantly. I'm picking up the accent against my will now haha. You wouldn't want to come back here, I understand completely haha.