Characters that can beat Batman even with Preptime on his side.

[Siriel]

Yeah, Luthor dedicated his entire life to making superpowered beings have bad days via science, not learning how to counter some shadowy corporate ninja.

[dupersuper]

I'd say Batman AND Lex's main advantage against Superman is that Superman is a really nice guy who isn't interested in leaving people as bloody smears on the floor, hurling them into the sun or any number of other nasty things.

Very true indeed.

Stupid work computer...