Who needs 'Batman vs. Superman' when you've got another superhero battle for the ages?

In this video, Batman and Robin take on Spider-Man in an MMA fight.

Yeah, we're not sure why, either. What we are sure of, though, is that while they're pummeling each other the Green Goblin and the Penguin can feel free to wreak as much havoc as they'd like.

Meanwhile, if anyone has highlights of Superman's tussle with Iron Man in the undercard, we'd love to see it.

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