On Luthor -
Supeman: But he's Lex flippin' Luthor!
On Batman -
Superman: That man won't quit until his last breath is drawn from his body.
And the ending bit -
Wonderwoman: Time to lockdown
Baddies: DD: BUT WE HELPED SAVE THE WORLD
Superman: [looks at Batman and shrugs]
Batman: [smirks] You're right. Five minute headstart.
Wonderwoman: Four minutes, fifty seconds.
Baddies: O___O [runs!]
Superman: Five minutes? Are you getting soft in your old age?
Batman: Don't you have a building to level?
Also, while everyone fights with SUPERPOWERS AND SUPERSTRENGTH.
...The Question runs over villains with his car. XD
EDIT - FLAAAAAAAAAAAAAAAAAAAAAAAASH