Batman's final showdown with Owlman. Even though Owlman is Batman's equal in fighting skills, and is using Powered Armor, Batman manages to survive pull off a last minute win by sending Owlman and his bomb off the icy alternate earth.
Batman: Careful, Aquaman! They're stronger than you are.
Aquaman: That remains to be seen.
Even better, since it's soon shown that Aquaman is demonstrably stronger than Captain Super.
Batman takes on the Super Family in a power loader. Yeah, he ends up getting pounded, but it's still awesome.
When Good Lex reveals the blue Kryptonite (Ultraman's weakness, as opposed to green Kryptonite for Superman). Never before has the ever-predictable Kryptonite reveal from a Luthor ever seemed so awesome.
Ultraman: Blue... Kryptonite!
Lex: The only thing that can hurt you.
Ultraman: But... I...
Lex: Destroyed the last piece on Earth? True. But I've been visiting other Earths.