All three families will go for the Kryptonians first. Doesn't take a rocket surgeon to know that they're ****ing huge. Kon's dead, so he's out of the picture. The Wonderbreads will take on Superman, and Bats and GA's crew will go for Supergirl, as she's less experienced.
First of all, Helena's not coming. She's not a Bat-team member, she's Birds. So they'll take Supergirl out pretty quickly, and then destroy Ollie's team. Batgirl takes down Connor, Nightwing takes down Arsenal, Batman takes down Green Arrow, Robin takes down Speedy, and Red Hood just passes around the goodness wherever it's needed. Batsquad owns the Arrow team.
Meanwhile, in the other fight, Superman beats the living **** out of Wonder Girl really ****ing quickly, being really fast, since her lasso is a bigger threat. Then he proceeds to do the same to Wonder Woman, since she has a lasso. And then he clocks the crap out of Donna (or does she have some incredible power or something? I don't keep good track of her.)
Superman's done with that pretty quickly, because he's really really fast. The Batsquad is still dishing out punishment to the Arrow team, because they're not really really fast. Realizing that they're all decked out in kryptonite, Superman realizes that the sensible solution is to not go fight them. Instead, he picks up a building and crushes them right as they're trying to figure out where he's at.
Superman wins, because he can pick up really big things. But, man, if this was in a closed environment, I think he's going down. Hard. Five guys decked out in kryptonite, that's pretty tough to beat.