Epic Battle- Zim vs. Dib - Who would win the fight?

It's hard to say. Zim and Dib have their episodes where they win and lose, with things remaining at a status quo so it could go either way. I imagine Zim and Dib would both be able to get their hands on some weapons, so neither one has the upperhand there. They probably wouldn't have help as the Irken army wouldn't support Zim and people think Dib is crazy so he's on his own. But just as Zim has Gir, maybe Dib would have some assistance from a reluctant Gaz. It would seem that Dib "should" win because Zim is technically the bad guy here trying to take over Earth. Then again, Zim is so destructive, he might end up destroying the planet even if Dib ultimately wins in the end. At the same time, I could totally see Zim conquering Earth and the Tallest realize Zim wasn't as incompetent as they thought and they respect him now. And it ends with Dib and all the other humans working as slaves for them :P Like I said, it's really hard for me to say who I think would win....