2016 will be a big year for longtime friends Ben Affleck and Matt Damon, with Ben Affleck starring as Batman in the highly-anticipated Batman v Superman: Dawn of Justice, while Matt Damon is returning as Jason Bourne in Bourne 5. While promoting the new season of their HBO series Project Greenlight, Ben Affleck and Matt Damon were asked who would win in a fight between Batman and Jason Bourne. Matt Damon chimed in first, revealing that his fictional character Jason Bourne is, in fact, "real."

"Well, first of all, Batman is not real and Jason Bourne is."

Ben Affleck countered by saying Jason Bourne isn't exactly in the same league as Superman.

"If Batman is fighting Superman, I think he's a little past Jason Bourne."

Matt Damon added that he isn't sure why Batman and Superman are fighting in the first place.

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"I don't understand why Batman and Superman are fighting. I guess I'll have to see the movie."

Who do you think would win in a fight between Batman and Jason Bourne? Chime in with your thoughts below.